/*  Prototype JavaScript framework, version 1.7_rc2
 *  (c) 2005-2010 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {

  Version: '1.7_rc2',

  Browser: (function(){
    var ua = navigator.userAgent;
    var isOpera = Object.prototype.toString.call(window.opera) == '[object Opera]';
    return {
      IE:             !!window.attachEvent && !isOpera,
      Opera:          isOpera,
      WebKit:         ua.indexOf('AppleWebKit/') > -1,
      Gecko:          ua.indexOf('Gecko') > -1 && ua.indexOf('KHTML') === -1,
      MobileSafari:   /Apple.*Mobile/.test(ua)
    }
  })(),

  BrowserFeatures: {
    XPath: !!document.evaluate,

    SelectorsAPI: !!document.querySelector,

    ElementExtensions: (function() {
      var constructor = window.Element || window.HTMLElement;
      return !!(constructor && constructor.prototype);
    })(),
    SpecificElementExtensions: (function() {
      if (typeof window.HTMLDivElement !== 'undefined')
        return true;

      var div = document.createElement('div'),
          form = document.createElement('form'),
          isSupported = false;

      if (div['__proto__'] && (div['__proto__'] !== form['__proto__'])) {
        isSupported = true;
      }

      div = form = null;

      return isSupported;
    })()
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },

  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


var Abstract = { };


var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

/* Based on Alex Arnell's inheritance implementation. */

var Class = (function() {

  var IS_DONTENUM_BUGGY = (function(){
    for (var p in { toString: 1 }) {
      if (p === 'toString') return false;
    }
    return true;
  })();

  function subclass() {};
  function create() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0, length = properties.length; i < length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;
    return klass;
  }

  function addMethods(source) {
    var ancestor   = this.superclass && this.superclass.prototype,
        properties = Object.keys(source);

    if (IS_DONTENUM_BUGGY) {
      if (source.toString != Object.prototype.toString)
        properties.push("toString");
      if (source.valueOf != Object.prototype.valueOf)
        properties.push("valueOf");
    }

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames()[0] == "$super") {
        var method = value;
        value = (function(m) {
          return function() { return ancestor[m].apply(this, arguments); };
        })(property).wrap(method);

        value.valueOf = method.valueOf.bind(method);
        value.toString = method.toString.bind(method);
      }
      this.prototype[property] = value;
    }

    return this;
  }

  return {
    create: create,
    Methods: {
      addMethods: addMethods
    }
  };
})();
(function() {

  var _toString = Object.prototype.toString,
      NULL_TYPE = 'Null',
      UNDEFINED_TYPE = 'Undefined',
      BOOLEAN_TYPE = 'Boolean',
      NUMBER_TYPE = 'Number',
      STRING_TYPE = 'String',
      OBJECT_TYPE = 'Object',
      BOOLEAN_CLASS = '[object Boolean]',
      NUMBER_CLASS = '[object Number]',
      STRING_CLASS = '[object String]',
      ARRAY_CLASS = '[object Array]',
      NATIVE_JSON_STRINGIFY_SUPPORT = window.JSON &&
        typeof JSON.stringify === 'function' &&
        JSON.stringify(0) === '0' &&
        typeof JSON.stringify(Prototype.K) === 'undefined';

  function Type(o) {
    switch(o) {
      case null: return NULL_TYPE;
      case (void 0): return UNDEFINED_TYPE;
    }
    var type = typeof o;
    switch(type) {
      case 'boolean': return BOOLEAN_TYPE;
      case 'number':  return NUMBER_TYPE;
      case 'string':  return STRING_TYPE;
    }
    return OBJECT_TYPE;
  }

  function extend(destination, source) {
    for (var property in source)
      destination[property] = source[property];
    return destination;
  }

  function inspect(object) {
    try {
      if (isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  }

  function toJSON(value) {
    return Str('', { '': value }, []);
  }

  function Str(key, holder, stack) {
    var value = holder[key],
        type = typeof value;

    if (Type(value) === OBJECT_TYPE && typeof value.toJSON === 'function') {
      value = value.toJSON(key);
    }

    var _class = _toString.call(value);

    switch (_class) {
      case NUMBER_CLASS:
      case BOOLEAN_CLASS:
      case STRING_CLASS:
        value = value.valueOf();
    }

    switch (value) {
      case null: return 'null';
      case true: return 'true';
      case false: return 'false';
    }

    type = typeof value;
    switch (type) {
      case 'string':
        return value.inspect(true);
      case 'number':
        return isFinite(value) ? String(value) : 'null';
      case 'object':

        for (var i = 0, length = stack.length; i < length; i++) {
          if (stack[i] === value) { throw new TypeError(); }
        }
        stack.push(value);

        var partial = [];
        if (_class === ARRAY_CLASS) {
          for (var i = 0, length = value.length; i < length; i++) {
            var str = Str(i, value, stack);
            partial.push(typeof str === 'undefined' ? 'null' : str);
          }
          partial = '[' + partial.join(',') + ']';
        } else {
          var keys = Object.keys(value);
          for (var i = 0, length = keys.length; i < length; i++) {
            var key = keys[i], str = Str(key, value, stack);
            if (typeof str !== "undefined") {
               partial.push(key.inspect(true)+ ':' + str);
             }
          }
          partial = '{' + partial.join(',') + '}';
        }
        stack.pop();
        return partial;
    }
  }

  function stringify(object) {
    return JSON.stringify(object);
  }

  function toQueryString(object) {
    return $H(object).toQueryString();
  }

  function toHTML(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  }

  function keys(object) {
    if (Type(object) !== OBJECT_TYPE) { throw new TypeError(); }
    var results = [];
    for (var property in object) {
      if (object.hasOwnProperty(property)) {
        results.push(property);
      }
    }
    return results;
  }

  function values(object) {
    var results = [];
    for (var property in object)
      results.push(object[property]);
    return results;
  }

  function clone(object) {
    return extend({ }, object);
  }

  function isElement(object) {
    return !!(object && object.nodeType == 1);
  }

  function isArray(object) {
    return _toString.call(object) === ARRAY_CLASS;
  }

  var hasNativeIsArray = (typeof Array.isArray == 'function')
    && Array.isArray([]) && !Array.isArray({});

  if (hasNativeIsArray) {
    isArray = Array.isArray;
  }

  function isHash(object) {
    return object instanceof Hash;
  }

  function isFunction(object) {
    return typeof object === "function";
  }

  function isString(object) {
    return _toString.call(object) === STRING_CLASS;
  }

  function isNumber(object) {
    return _toString.call(object) === NUMBER_CLASS;
  }

  function isUndefined(object) {
    return typeof object === "undefined";
  }

  extend(Object, {
    extend:        extend,
    inspect:       inspect,
    toJSON:        NATIVE_JSON_STRINGIFY_SUPPORT ? stringify : toJSON,
    toQueryString: toQueryString,
    toHTML:        toHTML,
    keys:          Object.keys || keys,
    values:        values,
    clone:         clone,
    isElement:     isElement,
    isArray:       isArray,
    isHash:        isHash,
    isFunction:    isFunction,
    isString:      isString,
    isNumber:      isNumber,
    isUndefined:   isUndefined
  });
})();
Object.extend(Function.prototype, (function() {
  var slice = Array.prototype.slice;

  function update(array, args) {
    var arrayLength = array.length, length = args.length;
    while (length--) array[arrayLength + length] = args[length];
    return array;
  }

  function merge(array, args) {
    array = slice.call(array, 0);
    return update(array, args);
  }

  function argumentNames() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\(([^)]*)\)/)[1]
      .replace(/\/\/.*?[\r\n]|\/\*(?:.|[\r\n])*?\*\//g, '')
      .replace(/\s+/g, '').split(',');
    return names.length == 1 && !names[0] ? [] : names;
  }

  function bind(context) {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = slice.call(arguments, 1);
    return function() {
      var a = merge(args, arguments);
      return __method.apply(context, a);
    }
  }

  function bindAsEventListener(context) {
    var __method = this, args = slice.call(arguments, 1);
    return function(event) {
      var a = update([event || window.event], args);
      return __method.apply(context, a);
    }
  }

  function curry() {
    if (!arguments.length) return this;
    var __method = this, args = slice.call(arguments, 0);
    return function() {
      var a = merge(args, arguments);
      return __method.apply(this, a);
    }
  }

  function delay(timeout) {
    var __method = this, args = slice.call(arguments, 1);
    timeout = timeout * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  }

  function defer() {
    var args = update([0.01], arguments);
    return this.delay.apply(this, args);
  }

  function wrap(wrapper) {
    var __method = this;
    return function() {
      var a = update([__method.bind(this)], arguments);
      return wrapper.apply(this, a);
    }
  }

  function methodize() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      var a = update([this], arguments);
      return __method.apply(null, a);
    };
  }

  return {
    argumentNames:       argumentNames,
    bind:                bind,
    bindAsEventListener: bindAsEventListener,
    curry:               curry,
    delay:               delay,
    defer:               defer,
    wrap:                wrap,
    methodize:           methodize
  }
})());



(function(proto) {


  function toISOString() {
    return this.getUTCFullYear() + '-' +
      (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
      this.getUTCDate().toPaddedString(2) + 'T' +
      this.getUTCHours().toPaddedString(2) + ':' +
      this.getUTCMinutes().toPaddedString(2) + ':' +
      this.getUTCSeconds().toPaddedString(2) + 'Z';
  }


  function toJSON() {
    return this.toISOString();
  }

  if (!proto.toISOString) proto.toISOString = toISOString;
  if (!proto.toJSON) proto.toJSON = toJSON;

})(Date.prototype);


RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};
var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
        this.currentlyExecuting = false;
      } catch(e) {
        this.currentlyExecuting = false;
        throw e;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, (function() {
  var NATIVE_JSON_PARSE_SUPPORT = window.JSON &&
    typeof JSON.parse === 'function' &&
    JSON.parse('{"test": true}').test;

  function prepareReplacement(replacement) {
    if (Object.isFunction(replacement)) return replacement;
    var template = new Template(replacement);
    return function(match) { return template.evaluate(match) };
  }

  function gsub(pattern, replacement) {
    var result = '', source = this, match;
    replacement = prepareReplacement(replacement);

    if (Object.isString(pattern))
      pattern = RegExp.escape(pattern);

    if (!(pattern.length || pattern.source)) {
      replacement = replacement('');
      return replacement + source.split('').join(replacement) + replacement;
    }

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  }

  function sub(pattern, replacement, count) {
    replacement = prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  }

  function scan(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  }

  function truncate(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  }

  function strip() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  }

  function stripTags() {
    return this.replace(/<\w+(\s+("[^"]*"|'[^']*'|[^>])+)?>|<\/\w+>/gi, '');
  }

  function stripScripts() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  }

  function extractScripts() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img'),
        matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  }

  function evalScripts() {
    return this.extractScripts().map(function(script) { return eval(script) });
  }

  function escapeHTML() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  }

  function unescapeHTML() {
    return this.stripTags().replace(/&lt;/g,'<').replace(/&gt;/g,'>').replace(/&amp;/g,'&');
  }


  function toQueryParams(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift()),
            value = pair.length > 1 ? pair.join('=') : pair[0];

        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  }

  function toArray() {
    return this.split('');
  }

  function succ() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  }

  function times(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  }

  function camelize() {
    return this.replace(/-+(.)?/g, function(match, chr) {
      return chr ? chr.toUpperCase() : '';
    });
  }

  function capitalize() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  }

  function underscore() {
    return this.replace(/::/g, '/')
               .replace(/([A-Z]+)([A-Z][a-z])/g, '$1_$2')
               .replace(/([a-z\d])([A-Z])/g, '$1_$2')
               .replace(/-/g, '_')
               .toLowerCase();
  }

  function dasherize() {
    return this.replace(/_/g, '-');
  }

  function inspect(useDoubleQuotes) {
    var escapedString = this.replace(/[\x00-\x1f\\]/g, function(character) {
      if (character in String.specialChar) {
        return String.specialChar[character];
      }
      return '\\u00' + character.charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  }

  function unfilterJSON(filter) {
    return this.replace(filter || Prototype.JSONFilter, '$1');
  }

  function isJSON() {
    var str = this;
    if (str.blank()) return false;
    str = str.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, '@');
    str = str.replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']');
    str = str.replace(/(?:^|:|,)(?:\s*\[)+/g, '');
    return (/^[\],:{}\s]*$/).test(str);
  }

  function evalJSON(sanitize) {
    var json = this.unfilterJSON(),
        cx = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g;
    if (cx.test(json)) {
      json = json.replace(cx, function (a) {
        return '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
      });
    }
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  }

  function parseJSON() {
    var json = this.unfilterJSON();
    return JSON.parse(json);
  }

  function include(pattern) {
    return this.indexOf(pattern) > -1;
  }

  function startsWith(pattern) {
    return this.lastIndexOf(pattern, 0) === 0;
  }

  function endsWith(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.indexOf(pattern, d) === d;
  }

  function empty() {
    return this == '';
  }

  function blank() {
    return /^\s*$/.test(this);
  }

  function interpolate(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }

  return {
    gsub:           gsub,
    sub:            sub,
    scan:           scan,
    truncate:       truncate,
    strip:          String.prototype.trim || strip,
    stripTags:      stripTags,
    stripScripts:   stripScripts,
    extractScripts: extractScripts,
    evalScripts:    evalScripts,
    escapeHTML:     escapeHTML,
    unescapeHTML:   unescapeHTML,
    toQueryParams:  toQueryParams,
    parseQuery:     toQueryParams,
    toArray:        toArray,
    succ:           succ,
    times:          times,
    camelize:       camelize,
    capitalize:     capitalize,
    underscore:     underscore,
    dasherize:      dasherize,
    inspect:        inspect,
    unfilterJSON:   unfilterJSON,
    isJSON:         isJSON,
    evalJSON:       NATIVE_JSON_PARSE_SUPPORT ? parseJSON : evalJSON,
    include:        include,
    startsWith:     startsWith,
    endsWith:       endsWith,
    empty:          empty,
    blank:          blank,
    interpolate:    interpolate
  };
})());

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (object && Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return (match[1] + '');

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3],
          pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;

      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].replace(/\\\\]/g, ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = (function() {
  function each(iterator, context) {
    var index = 0;
    try {
      this._each(function(value) {
        iterator.call(context, value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  }

  function eachSlice(number, iterator, context) {
    var index = -number, slices = [], array = this.toArray();
    if (number < 1) return array;
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  }

  function all(iterator, context) {
    iterator = iterator || Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator.call(context, value, index);
      if (!result) throw $break;
    });
    return result;
  }

  function any(iterator, context) {
    iterator = iterator || Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator.call(context, value, index))
        throw $break;
    });
    return result;
  }

  function collect(iterator, context) {
    iterator = iterator || Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator.call(context, value, index));
    });
    return results;
  }

  function detect(iterator, context) {
    var result;
    this.each(function(value, index) {
      if (iterator.call(context, value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  }

  function findAll(iterator, context) {
    var results = [];
    this.each(function(value, index) {
      if (iterator.call(context, value, index))
        results.push(value);
    });
    return results;
  }

  function grep(filter, iterator, context) {
    iterator = iterator || Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(RegExp.escape(filter));

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator.call(context, value, index));
    });
    return results;
  }

  function include(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  }

  function inGroupsOf(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  }

  function inject(memo, iterator, context) {
    this.each(function(value, index) {
      memo = iterator.call(context, memo, value, index);
    });
    return memo;
  }

  function invoke(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  }

  function max(iterator, context) {
    iterator = iterator || Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator.call(context, value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  }

  function min(iterator, context) {
    iterator = iterator || Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator.call(context, value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  }

  function partition(iterator, context) {
    iterator = iterator || Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator.call(context, value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  }

  function pluck(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  }

  function reject(iterator, context) {
    var results = [];
    this.each(function(value, index) {
      if (!iterator.call(context, value, index))
        results.push(value);
    });
    return results;
  }

  function sortBy(iterator, context) {
    return this.map(function(value, index) {
      return {
        value: value,
        criteria: iterator.call(context, value, index)
      };
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  }

  function toArray() {
    return this.map();
  }

  function zip() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  }

  function size() {
    return this.toArray().length;
  }

  function inspect() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }









  return {
    each:       each,
    eachSlice:  eachSlice,
    all:        all,
    every:      all,
    any:        any,
    some:       any,
    collect:    collect,
    map:        collect,
    detect:     detect,
    findAll:    findAll,
    select:     findAll,
    filter:     findAll,
    grep:       grep,
    include:    include,
    member:     include,
    inGroupsOf: inGroupsOf,
    inject:     inject,
    invoke:     invoke,
    max:        max,
    min:        min,
    partition:  partition,
    pluck:      pluck,
    reject:     reject,
    sortBy:     sortBy,
    toArray:    toArray,
    entries:    toArray,
    zip:        zip,
    size:       size,
    inspect:    inspect,
    find:       detect
  };
})();

function $A(iterable) {
  if (!iterable) return [];
  if ('toArray' in Object(iterable)) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}


function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

Array.from = $A;


(function() {
  var arrayProto = Array.prototype,
      slice = arrayProto.slice,
      _each = arrayProto.forEach; // use native browser JS 1.6 implementation if available

  function each(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  }
  if (!_each) _each = each;

  function clear() {
    this.length = 0;
    return this;
  }

  function first() {
    return this[0];
  }

  function last() {
    return this[this.length - 1];
  }

  function compact() {
    return this.select(function(value) {
      return value != null;
    });
  }

  function flatten() {
    return this.inject([], function(array, value) {
      if (Object.isArray(value))
        return array.concat(value.flatten());
      array.push(value);
      return array;
    });
  }

  function without() {
    var values = slice.call(arguments, 0);
    return this.select(function(value) {
      return !values.include(value);
    });
  }

  function reverse(inline) {
    return (inline === false ? this.toArray() : this)._reverse();
  }

  function uniq(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  }

  function intersect(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  }


  function clone() {
    return slice.call(this, 0);
  }

  function size() {
    return this.length;
  }

  function inspect() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  }

  function indexOf(item, i) {
    i || (i = 0);
    var length = this.length;
    if (i < 0) i = length + i;
    for (; i < length; i++)
      if (this[i] === item) return i;
    return -1;
  }

  function lastIndexOf(item, i) {
    i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
    var n = this.slice(0, i).reverse().indexOf(item);
    return (n < 0) ? n : i - n - 1;
  }

  function concat() {
    var array = slice.call(this, 0), item;
    for (var i = 0, length = arguments.length; i < length; i++) {
      item = arguments[i];
      if (Object.isArray(item) && !('callee' in item)) {
        for (var j = 0, arrayLength = item.length; j < arrayLength; j++)
          array.push(item[j]);
      } else {
        array.push(item);
      }
    }
    return array;
  }

  Object.extend(arrayProto, Enumerable);

  if (!arrayProto._reverse)
    arrayProto._reverse = arrayProto.reverse;

  Object.extend(arrayProto, {
    _each:     _each,
    clear:     clear,
    first:     first,
    last:      last,
    compact:   compact,
    flatten:   flatten,
    without:   without,
    reverse:   reverse,
    uniq:      uniq,
    intersect: intersect,
    clone:     clone,
    toArray:   clone,
    size:      size,
    inspect:   inspect
  });

  var CONCAT_ARGUMENTS_BUGGY = (function() {
    return [].concat(arguments)[0][0] !== 1;
  })(1,2)

  if (CONCAT_ARGUMENTS_BUGGY) arrayProto.concat = concat;

  if (!arrayProto.indexOf) arrayProto.indexOf = indexOf;
  if (!arrayProto.lastIndexOf) arrayProto.lastIndexOf = lastIndexOf;
})();
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {
  function initialize(object) {
    this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
  }


  function _each(iterator) {
    for (var key in this._object) {
      var value = this._object[key], pair = [key, value];
      pair.key = key;
      pair.value = value;
      iterator(pair);
    }
  }

  function set(key, value) {
    return this._object[key] = value;
  }

  function get(key) {
    if (this._object[key] !== Object.prototype[key])
      return this._object[key];
  }

  function unset(key) {
    var value = this._object[key];
    delete this._object[key];
    return value;
  }

  function toObject() {
    return Object.clone(this._object);
  }



  function keys() {
    return this.pluck('key');
  }

  function values() {
    return this.pluck('value');
  }

  function index(value) {
    var match = this.detect(function(pair) {
      return pair.value === value;
    });
    return match && match.key;
  }

  function merge(object) {
    return this.clone().update(object);
  }

  function update(object) {
    return new Hash(object).inject(this, function(result, pair) {
      result.set(pair.key, pair.value);
      return result;
    });
  }

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  function toQueryString() {
    return this.inject([], function(results, pair) {
      var key = encodeURIComponent(pair.key), values = pair.value;

      if (values && typeof values == 'object') {
        if (Object.isArray(values))
          return results.concat(values.map(toQueryPair.curry(key)));
      } else results.push(toQueryPair(key, values));
      return results;
    }).join('&');
  }

  function inspect() {
    return '#<Hash:{' + this.map(function(pair) {
      return pair.map(Object.inspect).join(': ');
    }).join(', ') + '}>';
  }

  function clone() {
    return new Hash(this);
  }

  return {
    initialize:             initialize,
    _each:                  _each,
    set:                    set,
    get:                    get,
    unset:                  unset,
    toObject:               toObject,
    toTemplateReplacements: toObject,
    keys:                   keys,
    values:                 values,
    index:                  index,
    merge:                  merge,
    update:                 update,
    toQueryString:          toQueryString,
    inspect:                inspect,
    toJSON:                 toObject,
    clone:                  clone
  };
})());

Hash.from = $H;
Object.extend(Number.prototype, (function() {
  function toColorPart() {
    return this.toPaddedString(2, 16);
  }

  function succ() {
    return this + 1;
  }

  function times(iterator, context) {
    $R(0, this, true).each(iterator, context);
    return this;
  }

  function toPaddedString(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  }

  function abs() {
    return Math.abs(this);
  }

  function round() {
    return Math.round(this);
  }

  function ceil() {
    return Math.ceil(this);
  }

  function floor() {
    return Math.floor(this);
  }

  return {
    toColorPart:    toColorPart,
    succ:           succ,
    times:          times,
    toPaddedString: toPaddedString,
    abs:            abs,
    round:          round,
    ceil:           ceil,
    floor:          floor
  };
})());

function $R(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
}

var ObjectRange = Class.create(Enumerable, (function() {
  function initialize(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  }

  function _each(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  }

  function include(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }

  return {
    initialize: initialize,
    _each:      _each,
    include:    include
  };
})());



var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});
Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});
Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null; }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];








Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if ((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if (readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,

  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});


function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}



(function(global) {

  var HAS_EXTENDED_CREATE_ELEMENT_SYNTAX = (function(){
    try {
      var el = document.createElement('<input name="x">');
      return el.tagName.toLowerCase() === 'input' && el.name === 'x';
    }
    catch(err) {
      return false;
    }
  })();

  var element = global.Element;

  global.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (HAS_EXTENDED_CREATE_ELEMENT_SYNTAX && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };

  Object.extend(global.Element, element || { });
  if (element) global.Element.prototype = element.prototype;

})(this);

Element.idCounter = 1;
Element.cache = { };

function purgeElement(element) {
  var uid = element._prototypeUID;
  if (uid) {
    Element.stopObserving(element);
    element._prototypeUID = void 0;
    delete Element.Storage[uid];
  }
}

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    element = $(element);
    element.style.display = 'none';
    return element;
  },

  show: function(element) {
    element = $(element);
    element.style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: (function(){

    var SELECT_ELEMENT_INNERHTML_BUGGY = (function(){
      var el = document.createElement("select"),
          isBuggy = true;
      el.innerHTML = "<option value=\"test\">test</option>";
      if (el.options && el.options[0]) {
        isBuggy = el.options[0].nodeName.toUpperCase() !== "OPTION";
      }
      el = null;
      return isBuggy;
    })();

    var TABLE_ELEMENT_INNERHTML_BUGGY = (function(){
      try {
        var el = document.createElement("table");
        if (el && el.tBodies) {
          el.innerHTML = "<tbody><tr><td>test</td></tr></tbody>";
          var isBuggy = typeof el.tBodies[0] == "undefined";
          el = null;
          return isBuggy;
        }
      } catch (e) {
        return true;
      }
    })();

    var SCRIPT_ELEMENT_REJECTS_TEXTNODE_APPENDING = (function () {
      var s = document.createElement("script"),
          isBuggy = false;
      try {
        s.appendChild(document.createTextNode(""));
        isBuggy = !s.firstChild ||
          s.firstChild && s.firstChild.nodeType !== 3;
      } catch (e) {
        isBuggy = true;
      }
      s = null;
      return isBuggy;
    })();

    function update(element, content) {
      element = $(element);

      var descendants = element.getElementsByTagName('*'),
       i = descendants.length;
      while (i--) purgeElement(descendants[i]);

      if (content && content.toElement)
        content = content.toElement();

      if (Object.isElement(content))
        return element.update().insert(content);

      content = Object.toHTML(content);

      var tagName = element.tagName.toUpperCase();

      if (tagName === 'SCRIPT' && SCRIPT_ELEMENT_REJECTS_TEXTNODE_APPENDING) {
        element.text = content;
        return element;
      }

      if (SELECT_ELEMENT_INNERHTML_BUGGY || TABLE_ELEMENT_INNERHTML_BUGGY) {
        if (tagName in Element._insertionTranslations.tags) {
          while (element.firstChild) {
            element.removeChild(element.firstChild);
          }
          Element._getContentFromAnonymousElement(tagName, content.stripScripts())
            .each(function(node) {
              element.appendChild(node)
            });
        }
        else {
          element.innerHTML = content.stripScripts();
        }
      }
      else {
        element.innerHTML = content.stripScripts();
      }

      content.evalScripts.bind(content).defer();
      return element;
    }

    return update;
  })(),

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(),
          attribute = pair.last(),
          value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property, maximumLength) {
    element = $(element);
    maximumLength = maximumLength || -1;
    var elements = [];

    while (element = element[property]) {
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
      if (elements.length == maximumLength)
        break;
    }

    return elements;
  },

  ancestors: function(element) {
    return Element.recursivelyCollect(element, 'parentNode');
  },

  descendants: function(element) {
    return Element.select(element, "*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    var results = [], child = $(element).firstChild;
    while (child) {
      if (child.nodeType === 1) {
        results.push(Element.extend(child));
      }
      child = child.nextSibling;
    }
    return results;
  },

  previousSiblings: function(element, maximumLength) {
    return Element.recursivelyCollect(element, 'previousSibling');
  },

  nextSiblings: function(element) {
    return Element.recursivelyCollect(element, 'nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return Element.previousSiblings(element).reverse()
      .concat(Element.nextSiblings(element));
  },

  match: function(element, selector) {
    element = $(element);
    if (Object.isString(selector))
      return Prototype.Selector.match(element, selector);
    return selector.match(element);
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = Element.ancestors(element);
    return Object.isNumber(expression) ? ancestors[expression] :
      Prototype.Selector.find(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return Element.firstDescendant(element);
    return Object.isNumber(expression) ? Element.descendants(element)[expression] :
      Element.select(element, expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (Object.isNumber(expression)) index = expression, expression = false;
    if (!Object.isNumber(index)) index = 0;

    if (expression) {
      return Prototype.Selector.find(element.previousSiblings(), expression, index);
    } else {
      return element.recursivelyCollect("previousSibling", index + 1)[index];
    }
  },

  next: function(element, expression, index) {
    element = $(element);
    if (Object.isNumber(expression)) index = expression, expression = false;
    if (!Object.isNumber(index)) index = 0;

    if (expression) {
      return Prototype.Selector.find(element.nextSiblings(), expression, index);
    } else {
      var maximumLength = Object.isNumber(index) ? index + 1 : 1;
      return element.recursivelyCollect("nextSibling", index + 1)[index];
    }
  },


  select: function(element) {
    element = $(element);
    var expressions = Array.prototype.slice.call(arguments, 1).join(', ');
    return Prototype.Selector.select(expressions, element);
  },

  adjacent: function(element) {
    element = $(element);
    var expressions = Array.prototype.slice.call(arguments, 1).join(', ');
    return Prototype.Selector.select(expressions, element.parentNode).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = Element.readAttribute(element, 'id');
    if (id) return id;
    do { id = 'anonymous_element_' + Element.idCounter++ } while ($(id));
    Element.writeAttribute(element, 'id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return Element.getDimensions(element).height;
  },

  getWidth: function(element) {
    return Element.getDimensions(element).width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!Element.hasClassName(element, className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return Element[Element.hasClassName(element, className) ?
      'removeClassName' : 'addClassName'](element, className);
  },

  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (ancestor.contains)
      return ancestor.contains(element) && ancestor !== element;

    while (element = element.parentNode)
      if (element == ancestor) return true;

    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = Element.cumulativeOffset(element);
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value || value == 'auto') {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      if (Prototype.Browser.Opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    if (element.parentNode) {
      do {
        valueT += element.offsetTop  || 0;
        valueL += element.offsetLeft || 0;
        element = element.offsetParent;
      } while (element);
    }
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName.toUpperCase() == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (Element.getStyle(element, 'position') == 'absolute') return element;

    var offsets = Element.positionedOffset(element),
        top     = offsets[1],
        left    = offsets[0],
        width   = element.clientWidth,
        height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (Element.getStyle(element, 'position') == 'relative') return element;

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0),
        left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0,
        valueL = 0,
        element = forElement;

    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || (element.tagName && (element.tagName.toUpperCase() == 'BODY'))) {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    source = $(source);
    var p = Element.viewportOffset(source), delta = [0, 0], parent = null;

    element = $(element);

    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = Element.getOffsetParent(element);
      delta = Element.viewportOffset(parent);
    }

    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,

  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          if (!Element.visible(element)) return null;

          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      if (!element.parentNode) return $(document.body);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        if (!element.parentNode) return Element._returnOffset(0, 0);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = (function(){

    var classProp = 'className',
        forProp = 'for',
        el = document.createElement('div');

    el.setAttribute(classProp, 'x');

    if (el.className !== 'x') {
      el.setAttribute('class', 'x');
      if (el.className === 'x') {
        classProp = 'class';
      }
    }
    el = null;

    el = document.createElement('label');
    el.setAttribute(forProp, 'x');
    if (el.htmlFor !== 'x') {
      el.setAttribute('htmlFor', 'x');
      if (el.htmlFor === 'x') {
        forProp = 'htmlFor';
      }
    }
    el = null;

    return {
      read: {
        names: {
          'class':      classProp,
          'className':  classProp,
          'for':        forProp,
          'htmlFor':    forProp
        },
        values: {
          _getAttr: function(element, attribute) {
            return element.getAttribute(attribute);
          },
          _getAttr2: function(element, attribute) {
            return element.getAttribute(attribute, 2);
          },
          _getAttrNode: function(element, attribute) {
            var node = element.getAttributeNode(attribute);
            return node ? node.value : "";
          },
          _getEv: (function(){

            var el = document.createElement('div'), f;
            el.onclick = Prototype.emptyFunction;
            var value = el.getAttribute('onclick');

            if (String(value).indexOf('{') > -1) {
              f = function(element, attribute) {
                attribute = element.getAttribute(attribute);
                if (!attribute) return null;
                attribute = attribute.toString();
                attribute = attribute.split('{')[1];
                attribute = attribute.split('}')[0];
                return attribute.strip();
              };
            }
            else if (value === '') {
              f = function(element, attribute) {
                attribute = element.getAttribute(attribute);
                if (!attribute) return null;
                return attribute.strip();
              };
            }
            el = null;
            return f;
          })(),
          _flag: function(element, attribute) {
            return $(element).hasAttribute(attribute) ? attribute : null;
          },
          style: function(element) {
            return element.style.cssText.toLowerCase();
          },
          title: function(element) {
            return element.title;
          }
        }
      }
    }
  })();

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc frameBorder').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr2,
      src:         v._getAttr2,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);

  if (Prototype.BrowserFeatures.ElementExtensions) {
    (function() {
      function _descendants(element) {
        var nodes = element.getElementsByTagName('*'), results = [];
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName !== "!") // Filter out comment nodes.
            results.push(node);
        return results;
      }

      Element.Methods.down = function(element, expression, index) {
        element = $(element);
        if (arguments.length == 1) return element.firstDescendant();
        return Object.isNumber(expression) ? _descendants(element)[expression] :
          Element.select(element, expression)[index || 0];
      }
    })();
  }

}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if (element.tagName.toUpperCase() == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if ('outerHTML' in document.documentElement) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next(),
          fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'),
      t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    for (var i = t[2]; i--; ) {
      div = div.firstChild;
    }
  }
  else {
    div.innerHTML = html;
  }
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  var tags = Element._insertionTranslations.tags;
  Object.extend(tags, {
    THEAD: tags.TBODY,
    TFOOT: tags.TBODY,
    TH:    tags.TD
  });
})();

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return !!(node && node.specified);
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

(function(div) {

  if (!Prototype.BrowserFeatures.ElementExtensions && div['__proto__']) {
    window.HTMLElement = { };
    window.HTMLElement.prototype = div['__proto__'];
    Prototype.BrowserFeatures.ElementExtensions = true;
  }

  div = null;

})(document.createElement('div'));

Element.extend = (function() {

  function checkDeficiency(tagName) {
    if (typeof window.Element != 'undefined') {
      var proto = window.Element.prototype;
      if (proto) {
        var id = '_' + (Math.random()+'').slice(2),
            el = document.createElement(tagName);
        proto[id] = 'x';
        var isBuggy = (el[id] !== 'x');
        delete proto[id];
        el = null;
        return isBuggy;
      }
    }
    return false;
  }

  function extendElementWith(element, methods) {
    for (var property in methods) {
      var value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }
  }

  var HTMLOBJECTELEMENT_PROTOTYPE_BUGGY = checkDeficiency('object');

  if (Prototype.BrowserFeatures.SpecificElementExtensions) {
    if (HTMLOBJECTELEMENT_PROTOTYPE_BUGGY) {
      return function(element) {
        if (element && typeof element._extendedByPrototype == 'undefined') {
          var t = element.tagName;
          if (t && (/^(?:object|applet|embed)$/i.test(t))) {
            extendElementWith(element, Element.Methods);
            extendElementWith(element, Element.Methods.Simulated);
            extendElementWith(element, Element.Methods.ByTag[t.toUpperCase()]);
          }
        }
        return element;
      }
    }
    return Prototype.K;
  }

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || typeof element._extendedByPrototype != 'undefined' ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
        tagName = element.tagName.toUpperCase();

    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    extendElementWith(element, methods);

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

if (document.documentElement.hasAttribute) {
  Element.hasAttribute = function(element, attribute) {
    return element.hasAttribute(attribute);
  };
}
else {
  Element.hasAttribute = Element.Methods.Simulated.hasAttribute;
}

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    var element = document.createElement(tagName),
        proto = element['__proto__'] || element.constructor.prototype;

    element = null;
    return proto;
  }

  var elementPrototype = window.HTMLElement ? HTMLElement.prototype :
   Element.prototype;

  if (F.ElementExtensions) {
    copy(Element.Methods, elementPrototype);
    copy(Element.Methods.Simulated, elementPrototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};


document.viewport = {

  getDimensions: function() {
    return { width: this.getWidth(), height: this.getHeight() };
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop  || document.body.scrollTop);
  }
};

(function(viewport) {
  var B = Prototype.Browser, doc = document, element, property = {};

  function getRootElement() {
    if (B.WebKit && !doc.evaluate)
      return document;

    if (B.Opera && window.parseFloat(window.opera.version()) < 9.5)
      return document.body;

    return document.documentElement;
  }

  function define(D) {
    if (!element) element = getRootElement();

    property[D] = 'client' + D;

    viewport['get' + D] = function() { return element[property[D]] };
    return viewport['get' + D]();
  }

  viewport.getWidth  = define.curry('Width');

  viewport.getHeight = define.curry('Height');
})(document.viewport);


Element.Storage = {
  UID: 1
};

Element.addMethods({
  getStorage: function(element) {
    if (!(element = $(element))) return;

    var uid;
    if (element === window) {
      uid = 0;
    } else {
      if (typeof element._prototypeUID === "undefined")
        element._prototypeUID = Element.Storage.UID++;
      uid = element._prototypeUID;
    }

    if (!Element.Storage[uid])
      Element.Storage[uid] = $H();

    return Element.Storage[uid];
  },

  store: function(element, key, value) {
    if (!(element = $(element))) return;

    if (arguments.length === 2) {
      Element.getStorage(element).update(key);
    } else {
      Element.getStorage(element).set(key, value);
    }

    return element;
  },

  retrieve: function(element, key, defaultValue) {
    if (!(element = $(element))) return;
    var hash = Element.getStorage(element), value = hash.get(key);

    if (Object.isUndefined(value)) {
      hash.set(key, defaultValue);
      value = defaultValue;
    }

    return value;
  },

  clone: function(element, deep) {
    if (!(element = $(element))) return;
    var clone = element.cloneNode(deep);
    clone._prototypeUID = void 0;
    if (deep) {
      var descendants = Element.select(clone, '*'),
          i = descendants.length;
      while (i--) {
        descendants[i]._prototypeUID = void 0;
      }
    }
    return Element.extend(clone);
  },

  purge: function(element) {
    if (!(element = $(element))) return;
    purgeElement(element);

    var descendants = element.getElementsByTagName('*'),
     i = descendants.length;

    while (i--) purgeElement(descendants[i]);

    return null;
  }
});

(function() {

  function toDecimal(pctString) {
    var match = pctString.match(/^(\d+)%?$/i);
    if (!match) return null;
    return (Number(match[1]) / 100);
  }

  function getPixelValue(value, property) {
    if (Object.isElement(value)) {
      element = value;
      value = element.getStyle(property);
    }
    if (value === null) {
      return null;
    }

    if ((/^(?:-)?\d+(\.\d+)?(px)?$/i).test(value)) {
      return window.parseFloat(value);
    }

    if (/\d/.test(value) && element.runtimeStyle) {
      var style = element.style.left, rStyle = element.runtimeStyle.left;
      element.runtimeStyle.left = element.currentStyle.left;
      element.style.left = value || 0;
      value = element.style.pixelLeft;
      element.style.left = style;
      element.runtimeStyle.left = rStyle;

      return value;
    }

    if (value.include('%')) {
      var decimal = toDecimal(value);
      var whole;
      if (property.include('left') || property.include('right') ||
       property.include('width')) {
        whole = $(element.parentNode).measure('width');
      } else if (property.include('top') || property.include('bottom') ||
       property.include('height')) {
        whole = $(element.parentNode).measure('height');
      }

      return whole * decimal;
    }

    return 0;
  }

  function toCSSPixels(number) {
    if (Object.isString(number) && number.endsWith('px')) {
      return number;
    }
    return number + 'px';
  }

  function isDisplayed(element) {
    var originalElement = element;
    while (element && element.parentNode) {
      var display = element.getStyle('display');
      if (display === 'none') {
        return false;
      }
      element = $(element.parentNode);
    }
    return true;
  }

  var hasLayout = Prototype.K;
  if ('currentStyle' in document.documentElement) {
    hasLayout = function(element) {
      if (!element.currentStyle.hasLayout) {
        element.style.zoom = 1;
      }
      return element;
    };
  }

  function cssNameFor(key) {
    if (key.include('border')) key = key + '-width';
    return key.camelize();
  }

  Element.Layout = Class.create(Hash, {
    initialize: function($super, element, preCompute) {
      $super();
      this.element = $(element);

      Element.Layout.PROPERTIES.each( function(property) {
        this._set(property, null);
      }, this);

      if (preCompute) {
        this._preComputing = true;
        this._begin();
        Element.Layout.PROPERTIES.each( this._compute, this );
        this._end();
        this._preComputing = false;
      }
    },

    _set: function(property, value) {
      return Hash.prototype.set.call(this, property, value);
    },

    set: function(property, value) {
      throw "Properties of Element.Layout are read-only.";
    },

    get: function($super, property) {
      var value = $super(property);
      return value === null ? this._compute(property) : value;
    },

    _begin: function() {
      if (this._prepared) return;

      var element = this.element;
      if (isDisplayed(element)) {
        this._prepared = true;
        return;
      }

      var originalStyles = {
        position:   element.style.position   || '',
        width:      element.style.width      || '',
        visibility: element.style.visibility || '',
        display:    element.style.display    || ''
      };

      element.store('prototype_original_styles', originalStyles);

      var position = element.getStyle('position'),
       width = element.getStyle('width');

      element.setStyle({
        position:   'absolute',
        visibility: 'hidden',
        display:    'block'
      });

      var positionedWidth = element.getStyle('width');

      var newWidth;
      if (width && (positionedWidth === width)) {
        newWidth = getPixelValue(width);
      } else if (width && (position === 'absolute' || position === 'fixed')) {
        newWidth = getPixelValue(width);
      } else {
        var parent = element.parentNode, pLayout = $(parent).getLayout();

        newWidth = pLayout.get('width') -
         this.get('margin-left') -
         this.get('border-left') -
         this.get('padding-left') -
         this.get('padding-right') -
         this.get('border-right') -
         this.get('margin-right');
      }

      element.setStyle({ width: newWidth + 'px' });

      this._prepared = true;
    },

    _end: function() {
      var element = this.element;
      var originalStyles = element.retrieve('prototype_original_styles');
      element.store('prototype_original_styles', null);
      element.setStyle(originalStyles);
      this._prepared = false;
    },

    _compute: function(property) {
      var COMPUTATIONS = Element.Layout.COMPUTATIONS;
      if (!(property in COMPUTATIONS)) {
        throw "Property not found.";
      }
      return this._set(property, COMPUTATIONS[property].call(this, this.element));
    },

    toObject: function() {
      var args = $A(arguments);
      var keys = (args.length === 0) ? Element.Layout.PROPERTIES :
       args.join(' ').split(' ');
      var obj = {};
      keys.each( function(key) {
        if (!Element.Layout.PROPERTIES.include(key)) return;
        var value = this.get(key);
        if (value != null) obj[key] = value;
      }, this);
      return obj;
    },

    toHash: function() {
      var obj = this.toObject.apply(this, arguments);
      return new Hash(obj);
    },

    toCSS: function() {
      var args = $A(arguments);
      var keys = (args.length === 0) ? Element.Layout.PROPERTIES :
       args.join(' ').split(' ');
      var css = {};

      keys.each( function(key) {
        if (!Element.Layout.PROPERTIES.include(key)) return;
        if (Element.Layout.COMPOSITE_PROPERTIES.include(key)) return;

        var value = this.get(key);
        if (value != null) css[cssNameFor(key)] = value + 'px';
      }, this);
      return css;
    },

    inspect: function() {
      return "#<Element.Layout>";
    }
  });

  Object.extend(Element.Layout, {
    PROPERTIES: $w('height width top left right bottom border-left border-right border-top border-bottom padding-left padding-right padding-top padding-bottom margin-top margin-bottom margin-left margin-right padding-box-width padding-box-height border-box-width border-box-height margin-box-width margin-box-height'),

    COMPOSITE_PROPERTIES: $w('padding-box-width padding-box-height margin-box-width margin-box-height border-box-width border-box-height'),

    COMPUTATIONS: {
      'height': function(element) {
        if (!this._preComputing) this._begin();

        var bHeight = this.get('border-box-height');
        if (bHeight <= 0) return 0;

        var bTop = this.get('border-top'),
         bBottom = this.get('border-bottom');

        var pTop = this.get('padding-top'),
         pBottom = this.get('padding-bottom');

        if (!this._preComputing) this._end();

        return bHeight - bTop - bBottom - pTop - pBottom;
      },

      'width': function(element) {
        if (!this._preComputing) this._begin();

        var bWidth = this.get('border-box-width');
        if (bWidth <= 0) return 0;

        var bLeft = this.get('border-left'),
         bRight = this.get('border-right');

        var pLeft = this.get('padding-left'),
         pRight = this.get('padding-right');

        if (!this._preComputing) this._end();

        return bWidth - bLeft - bRight - pLeft - pRight;
      },

      'padding-box-height': function(element) {
        var height = this.get('height'),
         pTop = this.get('padding-top'),
         pBottom = this.get('padding-bottom');

        return height + pTop + pBottom;
      },

      'padding-box-width': function(element) {
        var width = this.get('width'),
         pLeft = this.get('padding-left'),
         pRight = this.get('padding-right');

        return width + pLeft + pRight;
      },

      'border-box-height': function(element) {
        return element.offsetHeight;
      },

      'border-box-width': function(element) {
        return element.offsetWidth;
      },

      'margin-box-height': function(element) {
        var bHeight = this.get('border-box-height'),
         mTop = this.get('margin-top'),
         mBottom = this.get('margin-bottom');

        if (bHeight <= 0) return 0;

        return bHeight + mTop + mBottom;
      },

      'margin-box-width': function(element) {
        var bWidth = this.get('border-box-width'),
         mLeft = this.get('margin-left'),
         mRight = this.get('margin-right');

        if (bWidth <= 0) return 0;

        return bWidth + mLeft + mRight;
      },

      'top': function(element) {
        var offset = element.positionedOffset();
        return offset.top;
      },

      'bottom': function(element) {
        var offset = element.positionedOffset(),
         parent = element.getOffsetParent(),
         pHeight = parent.measure('height');

        var mHeight = this.get('border-box-height');

        return pHeight - mHeight - offset.top;
      },

      'left': function(element) {
        var offset = element.positionedOffset();
        return offset.left;
      },

      'right': function(element) {
        var offset = element.positionedOffset(),
         parent = element.getOffsetParent(),
         pWidth = parent.measure('width');

        var mWidth = this.get('border-box-width');

        return pWidth - mWidth - offset.left;
      },

      'padding-top': function(element) {
        return getPixelValue(element, 'paddingTop');
      },

      'padding-bottom': function(element) {
        return getPixelValue(element, 'paddingBottom');
      },

      'padding-left': function(element) {
        return getPixelValue(element, 'paddingLeft');
      },

      'padding-right': function(element) {
        return getPixelValue(element, 'paddingRight');
      },

      'border-top': function(element) {
        return Object.isNumber(element.clientTop) ? element.clientTop :
         getPixelValue(element, 'borderTopWidth');
      },

      'border-bottom': function(element) {
        return Object.isNumber(element.clientBottom) ? element.clientBottom :
         getPixelValue(element, 'borderBottomWidth');
      },

      'border-left': function(element) {
        return Object.isNumber(element.clientLeft) ? element.clientLeft :
         getPixelValue(element, 'borderLeftWidth');
      },

      'border-right': function(element) {
        return Object.isNumber(element.clientRight) ? element.clientRight :
         getPixelValue(element, 'borderRightWidth');
      },

      'margin-top': function(element) {
        return getPixelValue(element, 'marginTop');
      },

      'margin-bottom': function(element) {
        return getPixelValue(element, 'marginBottom');
      },

      'margin-left': function(element) {
        return getPixelValue(element, 'marginLeft');
      },

      'margin-right': function(element) {
        return getPixelValue(element, 'marginRight');
      }
    }
  });

  if ('getBoundingClientRect' in document.documentElement) {
    Object.extend(Element.Layout.COMPUTATIONS, {
      'right': function(element) {
        var parent = hasLayout(element.getOffsetParent());
        var rect = element.getBoundingClientRect(),
         pRect = parent.getBoundingClientRect();

        return (pRect.right - rect.right).round();
      },

      'bottom': function(element) {
        var parent = hasLayout(element.getOffsetParent());
        var rect = element.getBoundingClientRect(),
         pRect = parent.getBoundingClientRect();

        return (pRect.bottom - rect.bottom).round();
      }
    });
  }

  Element.Offset = Class.create({
    initialize: function(left, top) {
      this.left = left.round();
      this.top  = top.round();

      this[0] = this.left;
      this[1] = this.top;
    },

    relativeTo: function(offset) {
      return new Element.Offset(
        this.left - offset.left,
        this.top  - offset.top
      );
    },

    inspect: function() {
      return "#<Element.Offset left: #{left} top: #{top}>".interpolate(this);
    },

    toString: function() {
      return "[#{left}, #{top}]".interpolate(this);
    },

    toArray: function() {
      return [this.left, this.top];
    }
  });

  function getLayout(element, preCompute) {
    return new Element.Layout(element, preCompute);
  }

  function measure(element, property) {
    return $(element).getLayout().get(property);
  }

  function getDimensions(element) {
    var layout = $(element).getLayout();
    return {
      width:  layout.get('width'),
      height: layout.get('height')
    };
  }

  function getOffsetParent(element) {
    if (isDetached(element)) return $(document.body);

    var isInline = (Element.getStyle(element, 'display') === 'inline');
    if (!isInline && element.offsetParent) return $(element.offsetParent);
    if (element === document.body) return $(element);

    while ((element = element.parentNode) && element !== document.body) {
      if (Element.getStyle(element, 'position') !== 'static') {
        return (element.nodeName === 'HTML') ? $(document.body) : $(element);
      }
    }

    return $(document.body);
  }


  function cumulativeOffset(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return new Element.Offset(valueL, valueT);
  }

  function positionedOffset(element) {
    var layout = element.getLayout();

    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (isBody(element)) break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);

    valueL -= layout.get('margin-top');
    valueT -= layout.get('margin-left');

    return new Element.Offset(valueL, valueT);
  }

  function cumulativeScrollOffset(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return new Element.Offset(valueL, valueT);
  }

  function viewportOffset(forElement) {
    var valueT = 0, valueL = 0, docBody = document.body;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == docBody &&
        Element.getStyle(element, 'position') == 'absolute') break;
    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (element != docBody) {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);
    return new Element.Offset(valueL, valueT);
  }

  function absolutize(element) {
    element = $(element);

    if (Element.getStyle(element, 'position') === 'absolute') {
      return element;
    }

    var offsetParent = getOffsetParent(element);
    var eOffset = element.viewportOffset(),
     pOffset = offsetParent.viewportOffset();

    var offset = eOffset.relativeTo(pOffset);
    var layout = element.getLayout();

    element.store('prototype_absolutize_original_styles', {
      left:   element.getStyle('left'),
      top:    element.getStyle('top'),
      width:  element.getStyle('width'),
      height: element.getStyle('height')
    });

    element.setStyle({
      position: 'absolute',
      top:    offset.top + 'px',
      left:   offset.left + 'px',
      width:  layout.get('width') + 'px',
      height: layout.get('height') + 'px'
    });

    return element;
  }

  function relativize(element) {
    element = $(element);
    if (Element.getStyle(element, 'position') === 'relative') {
      return element;
    }

    var originalStyles =
     element.retrieve('prototype_absolutize_original_styles');

    if (originalStyles) element.setStyle(originalStyles);
    return element;
  }

  Element.addMethods({
    getLayout:              getLayout,
    measure:                measure,
    getDimensions:          getDimensions,
    getOffsetParent:        getOffsetParent,
    cumulativeOffset:       cumulativeOffset,
    positionedOffset:       positionedOffset,
    cumulativeScrollOffset: cumulativeScrollOffset,
    viewportOffset:         viewportOffset,
    absolutize:             absolutize,
    relativize:             relativize
  });

  function isBody(element) {
    return element.nodeName.toUpperCase() === 'BODY';
  }

  function isDetached(element) {
    return element !== document.body &&
     !Element.descendantOf(element, document.body);
  }

  if ('getBoundingClientRect' in document.documentElement) {
    Element.addMethods({
      viewportOffset: function(element) {
        element = $(element);
        if (isDetached(element)) return new Element.Offset(0, 0);

        var rect  = element.getBoundingClientRect(),
         docEl = document.documentElement;
        return new Element.Offset(rect.left - docEl.clientLeft,
         rect.top - docEl.clientTop);
      },

      positionedOffset: function(element) {
        element = $(element);
        var parent = element.getOffsetParent();
        if (isDetached(element)) return new Element.Offset(0, 0);

        if (element.offsetParent &&
         element.offsetParent.nodeName.toUpperCase() === 'HTML') {
          return positionedOffset(element);
        }

        var eOffset = element.viewportOffset(),
         pOffset = isBody(parent) ? viewportOffset(parent) :
          parent.viewportOffset();
        var retOffset = eOffset.relativeTo(pOffset);

        var layout = element.getLayout();
        var top  = retOffset.top  - layout.get('margin-top');
        var left = retOffset.left - layout.get('margin-left');

        return new Element.Offset(left, top);
      }
    });
  }
})();
window.$$ = function() {
  var expression = $A(arguments).join(', ');
  return Prototype.Selector.select(expression, document);
};

Prototype.Selector = (function() {

  function select() {
    throw new Error('Method "Prototype.Selector.select" must be defined.');
  }

  function match() {
    throw new Error('Method "Prototype.Selector.match" must be defined.');
  }

  function find(elements, expression, index) {
    index = index || 0;
    var match = Prototype.Selector.match, length = elements.length, matchIndex = 0, i;

    for (i = 0; i < length; i++) {
      if (match(elements[i], expression) && index == matchIndex++) {
        return Element.extend(elements[i]);
      }
    }
  }

  function extendElements(elements) {
    for (var i = 0, length = elements.length; i < length; i++) {
      Element.extend(elements[i]);
    }
    return elements;
  }


  var K = Prototype.K;

  return {
    select: select,
    match: match,
    find: find,
    extendElements: (Element.extend === K) ? K : extendElements,
    extendElement: Element.extend
  };
})();
Prototype._original_property = window.Sizzle;
/*!
 * Sizzle CSS Selector Engine - v1.0
 *  Copyright 2009, The Dojo Foundation
 *  Released under the MIT, BSD, and GPL Licenses.
 *  More information: http://sizzlejs.com/
 */
(function(){

var chunker = /((?:\((?:\([^()]+\)|[^()]+)+\)|\[(?:\[[^[\]]*\]|['"][^'"]*['"]|[^[\]'"]+)+\]|\\.|[^ >+~,(\[\\]+)+|[>+~])(\s*,\s*)?((?:.|\r|\n)*)/g,
	done = 0,
	toString = Object.prototype.toString,
	hasDuplicate = false,
	baseHasDuplicate = true;

[0, 0].sort(function(){
	baseHasDuplicate = false;
	return 0;
});

var Sizzle = function(selector, context, results, seed) {
	results = results || [];
	var origContext = context = context || document;

	if ( context.nodeType !== 1 && context.nodeType !== 9 ) {
		return [];
	}

	if ( !selector || typeof selector !== "string" ) {
		return results;
	}

	var parts = [], m, set, checkSet, check, mode, extra, prune = true, contextXML = isXML(context),
		soFar = selector;

	while ( (chunker.exec(""), m = chunker.exec(soFar)) !== null ) {
		soFar = m[3];

		parts.push( m[1] );

		if ( m[2] ) {
			extra = m[3];
			break;
		}
	}

	if ( parts.length > 1 && origPOS.exec( selector ) ) {
		if ( parts.length === 2 && Expr.relative[ parts[0] ] ) {
			set = posProcess( parts[0] + parts[1], context );
		} else {
			set = Expr.relative[ parts[0] ] ?
				[ context ] :
				Sizzle( parts.shift(), context );

			while ( parts.length ) {
				selector = parts.shift();

				if ( Expr.relative[ selector ] )
					selector += parts.shift();

				set = posProcess( selector, set );
			}
		}
	} else {
		if ( !seed && parts.length > 1 && context.nodeType === 9 && !contextXML &&
				Expr.match.ID.test(parts[0]) && !Expr.match.ID.test(parts[parts.length - 1]) ) {
			var ret = Sizzle.find( parts.shift(), context, contextXML );
			context = ret.expr ? Sizzle.filter( ret.expr, ret.set )[0] : ret.set[0];
		}

		if ( context ) {
			var ret = seed ?
				{ expr: parts.pop(), set: makeArray(seed) } :
				Sizzle.find( parts.pop(), parts.length === 1 && (parts[0] === "~" || parts[0] === "+") && context.parentNode ? context.parentNode : context, contextXML );
			set = ret.expr ? Sizzle.filter( ret.expr, ret.set ) : ret.set;

			if ( parts.length > 0 ) {
				checkSet = makeArray(set);
			} else {
				prune = false;
			}

			while ( parts.length ) {
				var cur = parts.pop(), pop = cur;

				if ( !Expr.relative[ cur ] ) {
					cur = "";
				} else {
					pop = parts.pop();
				}

				if ( pop == null ) {
					pop = context;
				}

				Expr.relative[ cur ]( checkSet, pop, contextXML );
			}
		} else {
			checkSet = parts = [];
		}
	}

	if ( !checkSet ) {
		checkSet = set;
	}

	if ( !checkSet ) {
		throw "Syntax error, unrecognized expression: " + (cur || selector);
	}

	if ( toString.call(checkSet) === "[object Array]" ) {
		if ( !prune ) {
			results.push.apply( results, checkSet );
		} else if ( context && context.nodeType === 1 ) {
			for ( var i = 0; checkSet[i] != null; i++ ) {
				if ( checkSet[i] && (checkSet[i] === true || checkSet[i].nodeType === 1 && contains(context, checkSet[i])) ) {
					results.push( set[i] );
				}
			}
		} else {
			for ( var i = 0; checkSet[i] != null; i++ ) {
				if ( checkSet[i] && checkSet[i].nodeType === 1 ) {
					results.push( set[i] );
				}
			}
		}
	} else {
		makeArray( checkSet, results );
	}

	if ( extra ) {
		Sizzle( extra, origContext, results, seed );
		Sizzle.uniqueSort( results );
	}

	return results;
};

Sizzle.uniqueSort = function(results){
	if ( sortOrder ) {
		hasDuplicate = baseHasDuplicate;
		results.sort(sortOrder);

		if ( hasDuplicate ) {
			for ( var i = 1; i < results.length; i++ ) {
				if ( results[i] === results[i-1] ) {
					results.splice(i--, 1);
				}
			}
		}
	}

	return results;
};

Sizzle.matches = function(expr, set){
	return Sizzle(expr, null, null, set);
};

Sizzle.find = function(expr, context, isXML){
	var set, match;

	if ( !expr ) {
		return [];
	}

	for ( var i = 0, l = Expr.order.length; i < l; i++ ) {
		var type = Expr.order[i], match;

		if ( (match = Expr.leftMatch[ type ].exec( expr )) ) {
			var left = match[1];
			match.splice(1,1);

			if ( left.substr( left.length - 1 ) !== "\\" ) {
				match[1] = (match[1] || "").replace(/\\/g, "");
				set = Expr.find[ type ]( match, context, isXML );
				if ( set != null ) {
					expr = expr.replace( Expr.match[ type ], "" );
					break;
				}
			}
		}
	}

	if ( !set ) {
		set = context.getElementsByTagName("*");
	}

	return {set: set, expr: expr};
};

Sizzle.filter = function(expr, set, inplace, not){
	var old = expr, result = [], curLoop = set, match, anyFound,
		isXMLFilter = set && set[0] && isXML(set[0]);

	while ( expr && set.length ) {
		for ( var type in Expr.filter ) {
			if ( (match = Expr.match[ type ].exec( expr )) != null ) {
				var filter = Expr.filter[ type ], found, item;
				anyFound = false;

				if ( curLoop == result ) {
					result = [];
				}

				if ( Expr.preFilter[ type ] ) {
					match = Expr.preFilter[ type ]( match, curLoop, inplace, result, not, isXMLFilter );

					if ( !match ) {
						anyFound = found = true;
					} else if ( match === true ) {
						continue;
					}
				}

				if ( match ) {
					for ( var i = 0; (item = curLoop[i]) != null; i++ ) {
						if ( item ) {
							found = filter( item, match, i, curLoop );
							var pass = not ^ !!found;

							if ( inplace && found != null ) {
								if ( pass ) {
									anyFound = true;
								} else {
									curLoop[i] = false;
								}
							} else if ( pass ) {
								result.push( item );
								anyFound = true;
							}
						}
					}
				}

				if ( found !== undefined ) {
					if ( !inplace ) {
						curLoop = result;
					}

					expr = expr.replace( Expr.match[ type ], "" );

					if ( !anyFound ) {
						return [];
					}

					break;
				}
			}
		}

		if ( expr == old ) {
			if ( anyFound == null ) {
				throw "Syntax error, unrecognized expression: " + expr;
			} else {
				break;
			}
		}

		old = expr;
	}

	return curLoop;
};

var Expr = Sizzle.selectors = {
	order: [ "ID", "NAME", "TAG" ],
	match: {
		ID: /#((?:[\w\u00c0-\uFFFF-]|\\.)+)/,
		CLASS: /\.((?:[\w\u00c0-\uFFFF-]|\\.)+)/,
		NAME: /\[name=['"]*((?:[\w\u00c0-\uFFFF-]|\\.)+)['"]*\]/,
		ATTR: /\[\s*((?:[\w\u00c0-\uFFFF-]|\\.)+)\s*(?:(\S?=)\s*(['"]*)(.*?)\3|)\s*\]/,
		TAG: /^((?:[\w\u00c0-\uFFFF\*-]|\\.)+)/,
		CHILD: /:(only|nth|last|first)-child(?:\((even|odd|[\dn+-]*)\))?/,
		POS: /:(nth|eq|gt|lt|first|last|even|odd)(?:\((\d*)\))?(?=[^-]|$)/,
		PSEUDO: /:((?:[\w\u00c0-\uFFFF-]|\\.)+)(?:\((['"]*)((?:\([^\)]+\)|[^\2\(\)]*)+)\2\))?/
	},
	leftMatch: {},
	attrMap: {
		"class": "className",
		"for": "htmlFor"
	},
	attrHandle: {
		href: function(elem){
			return elem.getAttribute("href");
		}
	},
	relative: {
		"+": function(checkSet, part, isXML){
			var isPartStr = typeof part === "string",
				isTag = isPartStr && !/\W/.test(part),
				isPartStrNotTag = isPartStr && !isTag;

			if ( isTag && !isXML ) {
				part = part.toUpperCase();
			}

			for ( var i = 0, l = checkSet.length, elem; i < l; i++ ) {
				if ( (elem = checkSet[i]) ) {
					while ( (elem = elem.previousSibling) && elem.nodeType !== 1 ) {}

					checkSet[i] = isPartStrNotTag || elem && elem.nodeName === part ?
						elem || false :
						elem === part;
				}
			}

			if ( isPartStrNotTag ) {
				Sizzle.filter( part, checkSet, true );
			}
		},
		">": function(checkSet, part, isXML){
			var isPartStr = typeof part === "string";

			if ( isPartStr && !/\W/.test(part) ) {
				part = isXML ? part : part.toUpperCase();

				for ( var i = 0, l = checkSet.length; i < l; i++ ) {
					var elem = checkSet[i];
					if ( elem ) {
						var parent = elem.parentNode;
						checkSet[i] = parent.nodeName === part ? parent : false;
					}
				}
			} else {
				for ( var i = 0, l = checkSet.length; i < l; i++ ) {
					var elem = checkSet[i];
					if ( elem ) {
						checkSet[i] = isPartStr ?
							elem.parentNode :
							elem.parentNode === part;
					}
				}

				if ( isPartStr ) {
					Sizzle.filter( part, checkSet, true );
				}
			}
		},
		"": function(checkSet, part, isXML){
			var doneName = done++, checkFn = dirCheck;

			if ( !/\W/.test(part) ) {
				var nodeCheck = part = isXML ? part : part.toUpperCase();
				checkFn = dirNodeCheck;
			}

			checkFn("parentNode", part, doneName, checkSet, nodeCheck, isXML);
		},
		"~": function(checkSet, part, isXML){
			var doneName = done++, checkFn = dirCheck;

			if ( typeof part === "string" && !/\W/.test(part) ) {
				var nodeCheck = part = isXML ? part : part.toUpperCase();
				checkFn = dirNodeCheck;
			}

			checkFn("previousSibling", part, doneName, checkSet, nodeCheck, isXML);
		}
	},
	find: {
		ID: function(match, context, isXML){
			if ( typeof context.getElementById !== "undefined" && !isXML ) {
				var m = context.getElementById(match[1]);
				return m ? [m] : [];
			}
		},
		NAME: function(match, context, isXML){
			if ( typeof context.getElementsByName !== "undefined" ) {
				var ret = [], results = context.getElementsByName(match[1]);

				for ( var i = 0, l = results.length; i < l; i++ ) {
					if ( results[i].getAttribute("name") === match[1] ) {
						ret.push( results[i] );
					}
				}

				return ret.length === 0 ? null : ret;
			}
		},
		TAG: function(match, context){
			return context.getElementsByTagName(match[1]);
		}
	},
	preFilter: {
		CLASS: function(match, curLoop, inplace, result, not, isXML){
			match = " " + match[1].replace(/\\/g, "") + " ";

			if ( isXML ) {
				return match;
			}

			for ( var i = 0, elem; (elem = curLoop[i]) != null; i++ ) {
				if ( elem ) {
					if ( not ^ (elem.className && (" " + elem.className + " ").indexOf(match) >= 0) ) {
						if ( !inplace )
							result.push( elem );
					} else if ( inplace ) {
						curLoop[i] = false;
					}
				}
			}

			return false;
		},
		ID: function(match){
			return match[1].replace(/\\/g, "");
		},
		TAG: function(match, curLoop){
			for ( var i = 0; curLoop[i] === false; i++ ){}
			return curLoop[i] && isXML(curLoop[i]) ? match[1] : match[1].toUpperCase();
		},
		CHILD: function(match){
			if ( match[1] == "nth" ) {
				var test = /(-?)(\d*)n((?:\+|-)?\d*)/.exec(
					match[2] == "even" && "2n" || match[2] == "odd" && "2n+1" ||
					!/\D/.test( match[2] ) && "0n+" + match[2] || match[2]);

				match[2] = (test[1] + (test[2] || 1)) - 0;
				match[3] = test[3] - 0;
			}

			match[0] = done++;

			return match;
		},
		ATTR: function(match, curLoop, inplace, result, not, isXML){
			var name = match[1].replace(/\\/g, "");

			if ( !isXML && Expr.attrMap[name] ) {
				match[1] = Expr.attrMap[name];
			}

			if ( match[2] === "~=" ) {
				match[4] = " " + match[4] + " ";
			}

			return match;
		},
		PSEUDO: function(match, curLoop, inplace, result, not){
			if ( match[1] === "not" ) {
				if ( ( chunker.exec(match[3]) || "" ).length > 1 || /^\w/.test(match[3]) ) {
					match[3] = Sizzle(match[3], null, null, curLoop);
				} else {
					var ret = Sizzle.filter(match[3], curLoop, inplace, true ^ not);
					if ( !inplace ) {
						result.push.apply( result, ret );
					}
					return false;
				}
			} else if ( Expr.match.POS.test( match[0] ) || Expr.match.CHILD.test( match[0] ) ) {
				return true;
			}

			return match;
		},
		POS: function(match){
			match.unshift( true );
			return match;
		}
	},
	filters: {
		enabled: function(elem){
			return elem.disabled === false && elem.type !== "hidden";
		},
		disabled: function(elem){
			return elem.disabled === true;
		},
		checked: function(elem){
			return elem.checked === true;
		},
		selected: function(elem){
			elem.parentNode.selectedIndex;
			return elem.selected === true;
		},
		parent: function(elem){
			return !!elem.firstChild;
		},
		empty: function(elem){
			return !elem.firstChild;
		},
		has: function(elem, i, match){
			return !!Sizzle( match[3], elem ).length;
		},
		header: function(elem){
			return /h\d/i.test( elem.nodeName );
		},
		text: function(elem){
			return "text" === elem.type;
		},
		radio: function(elem){
			return "radio" === elem.type;
		},
		checkbox: function(elem){
			return "checkbox" === elem.type;
		},
		file: function(elem){
			return "file" === elem.type;
		},
		password: function(elem){
			return "password" === elem.type;
		},
		submit: function(elem){
			return "submit" === elem.type;
		},
		image: function(elem){
			return "image" === elem.type;
		},
		reset: function(elem){
			return "reset" === elem.type;
		},
		button: function(elem){
			return "button" === elem.type || elem.nodeName.toUpperCase() === "BUTTON";
		},
		input: function(elem){
			return /input|select|textarea|button/i.test(elem.nodeName);
		}
	},
	setFilters: {
		first: function(elem, i){
			return i === 0;
		},
		last: function(elem, i, match, array){
			return i === array.length - 1;
		},
		even: function(elem, i){
			return i % 2 === 0;
		},
		odd: function(elem, i){
			return i % 2 === 1;
		},
		lt: function(elem, i, match){
			return i < match[3] - 0;
		},
		gt: function(elem, i, match){
			return i > match[3] - 0;
		},
		nth: function(elem, i, match){
			return match[3] - 0 == i;
		},
		eq: function(elem, i, match){
			return match[3] - 0 == i;
		}
	},
	filter: {
		PSEUDO: function(elem, match, i, array){
			var name = match[1], filter = Expr.filters[ name ];

			if ( filter ) {
				return filter( elem, i, match, array );
			} else if ( name === "contains" ) {
				return (elem.textContent || elem.innerText || "").indexOf(match[3]) >= 0;
			} else if ( name === "not" ) {
				var not = match[3];

				for ( var i = 0, l = not.length; i < l; i++ ) {
					if ( not[i] === elem ) {
						return false;
					}
				}

				return true;
			}
		},
		CHILD: function(elem, match){
			var type = match[1], node = elem;
			switch (type) {
				case 'only':
				case 'first':
					while ( (node = node.previousSibling) )  {
						if ( node.nodeType === 1 ) return false;
					}
					if ( type == 'first') return true;
					node = elem;
				case 'last':
					while ( (node = node.nextSibling) )  {
						if ( node.nodeType === 1 ) return false;
					}
					return true;
				case 'nth':
					var first = match[2], last = match[3];

					if ( first == 1 && last == 0 ) {
						return true;
					}

					var doneName = match[0],
						parent = elem.parentNode;

					if ( parent && (parent.sizcache !== doneName || !elem.nodeIndex) ) {
						var count = 0;
						for ( node = parent.firstChild; node; node = node.nextSibling ) {
							if ( node.nodeType === 1 ) {
								node.nodeIndex = ++count;
							}
						}
						parent.sizcache = doneName;
					}

					var diff = elem.nodeIndex - last;
					if ( first == 0 ) {
						return diff == 0;
					} else {
						return ( diff % first == 0 && diff / first >= 0 );
					}
			}
		},
		ID: function(elem, match){
			return elem.nodeType === 1 && elem.getAttribute("id") === match;
		},
		TAG: function(elem, match){
			return (match === "*" && elem.nodeType === 1) || elem.nodeName === match;
		},
		CLASS: function(elem, match){
			return (" " + (elem.className || elem.getAttribute("class")) + " ")
				.indexOf( match ) > -1;
		},
		ATTR: function(elem, match){
			var name = match[1],
				result = Expr.attrHandle[ name ] ?
					Expr.attrHandle[ name ]( elem ) :
					elem[ name ] != null ?
						elem[ name ] :
						elem.getAttribute( name ),
				value = result + "",
				type = match[2],
				check = match[4];

			return result == null ?
				type === "!=" :
				type === "=" ?
				value === check :
				type === "*=" ?
				value.indexOf(check) >= 0 :
				type === "~=" ?
				(" " + value + " ").indexOf(check) >= 0 :
				!check ?
				value && result !== false :
				type === "!=" ?
				value != check :
				type === "^=" ?
				value.indexOf(check) === 0 :
				type === "$=" ?
				value.substr(value.length - check.length) === check :
				type === "|=" ?
				value === check || value.substr(0, check.length + 1) === check + "-" :
				false;
		},
		POS: function(elem, match, i, array){
			var name = match[2], filter = Expr.setFilters[ name ];

			if ( filter ) {
				return filter( elem, i, match, array );
			}
		}
	}
};

var origPOS = Expr.match.POS;

for ( var type in Expr.match ) {
	Expr.match[ type ] = new RegExp( Expr.match[ type ].source + /(?![^\[]*\])(?![^\(]*\))/.source );
	Expr.leftMatch[ type ] = new RegExp( /(^(?:.|\r|\n)*?)/.source + Expr.match[ type ].source );
}

var makeArray = function(array, results) {
	array = Array.prototype.slice.call( array, 0 );

	if ( results ) {
		results.push.apply( results, array );
		return results;
	}

	return array;
};

try {
	Array.prototype.slice.call( document.documentElement.childNodes, 0 );

} catch(e){
	makeArray = function(array, results) {
		var ret = results || [];

		if ( toString.call(array) === "[object Array]" ) {
			Array.prototype.push.apply( ret, array );
		} else {
			if ( typeof array.length === "number" ) {
				for ( var i = 0, l = array.length; i < l; i++ ) {
					ret.push( array[i] );
				}
			} else {
				for ( var i = 0; array[i]; i++ ) {
					ret.push( array[i] );
				}
			}
		}

		return ret;
	};
}

var sortOrder;

if ( document.documentElement.compareDocumentPosition ) {
	sortOrder = function( a, b ) {
		if ( !a.compareDocumentPosition || !b.compareDocumentPosition ) {
			if ( a == b ) {
				hasDuplicate = true;
			}
			return 0;
		}

		var ret = a.compareDocumentPosition(b) & 4 ? -1 : a === b ? 0 : 1;
		if ( ret === 0 ) {
			hasDuplicate = true;
		}
		return ret;
	};
} else if ( "sourceIndex" in document.documentElement ) {
	sortOrder = function( a, b ) {
		if ( !a.sourceIndex || !b.sourceIndex ) {
			if ( a == b ) {
				hasDuplicate = true;
			}
			return 0;
		}

		var ret = a.sourceIndex - b.sourceIndex;
		if ( ret === 0 ) {
			hasDuplicate = true;
		}
		return ret;
	};
} else if ( document.createRange ) {
	sortOrder = function( a, b ) {
		if ( !a.ownerDocument || !b.ownerDocument ) {
			if ( a == b ) {
				hasDuplicate = true;
			}
			return 0;
		}

		var aRange = a.ownerDocument.createRange(), bRange = b.ownerDocument.createRange();
		aRange.setStart(a, 0);
		aRange.setEnd(a, 0);
		bRange.setStart(b, 0);
		bRange.setEnd(b, 0);
		var ret = aRange.compareBoundaryPoints(Range.START_TO_END, bRange);
		if ( ret === 0 ) {
			hasDuplicate = true;
		}
		return ret;
	};
}

(function(){
	var form = document.createElement("div"),
		id = "script" + (new Date).getTime();
	form.innerHTML = "<a name='" + id + "'/>";

	var root = document.documentElement;
	root.insertBefore( form, root.firstChild );

	if ( !!document.getElementById( id ) ) {
		Expr.find.ID = function(match, context, isXML){
			if ( typeof context.getElementById !== "undefined" && !isXML ) {
				var m = context.getElementById(match[1]);
				return m ? m.id === match[1] || typeof m.getAttributeNode !== "undefined" && m.getAttributeNode("id").nodeValue === match[1] ? [m] : undefined : [];
			}
		};

		Expr.filter.ID = function(elem, match){
			var node = typeof elem.getAttributeNode !== "undefined" && elem.getAttributeNode("id");
			return elem.nodeType === 1 && node && node.nodeValue === match;
		};
	}

	root.removeChild( form );
	root = form = null; // release memory in IE
})();

(function(){

	var div = document.createElement("div");
	div.appendChild( document.createComment("") );

	if ( div.getElementsByTagName("*").length > 0 ) {
		Expr.find.TAG = function(match, context){
			var results = context.getElementsByTagName(match[1]);

			if ( match[1] === "*" ) {
				var tmp = [];

				for ( var i = 0; results[i]; i++ ) {
					if ( results[i].nodeType === 1 ) {
						tmp.push( results[i] );
					}
				}

				results = tmp;
			}

			return results;
		};
	}

	div.innerHTML = "<a href='#'></a>";
	if ( div.firstChild && typeof div.firstChild.getAttribute !== "undefined" &&
			div.firstChild.getAttribute("href") !== "#" ) {
		Expr.attrHandle.href = function(elem){
			return elem.getAttribute("href", 2);
		};
	}

	div = null; // release memory in IE
})();

if ( document.querySelectorAll ) (function(){
	var oldSizzle = Sizzle, div = document.createElement("div");
	div.innerHTML = "<p class='TEST'></p>";

	if ( div.querySelectorAll && div.querySelectorAll(".TEST").length === 0 ) {
		return;
	}

	Sizzle = function(query, context, extra, seed){
		context = context || document;

		if ( !seed && context.nodeType === 9 && !isXML(context) ) {
			try {
				return makeArray( context.querySelectorAll(query), extra );
			} catch(e){}
		}

		return oldSizzle(query, context, extra, seed);
	};

	for ( var prop in oldSizzle ) {
		Sizzle[ prop ] = oldSizzle[ prop ];
	}

	div = null; // release memory in IE
})();

if ( document.getElementsByClassName && document.documentElement.getElementsByClassName ) (function(){
	var div = document.createElement("div");
	div.innerHTML = "<div class='test e'></div><div class='test'></div>";

	if ( div.getElementsByClassName("e").length === 0 )
		return;

	div.lastChild.className = "e";

	if ( div.getElementsByClassName("e").length === 1 )
		return;

	Expr.order.splice(1, 0, "CLASS");
	Expr.find.CLASS = function(match, context, isXML) {
		if ( typeof context.getElementsByClassName !== "undefined" && !isXML ) {
			return context.getElementsByClassName(match[1]);
		}
	};

	div = null; // release memory in IE
})();

function dirNodeCheck( dir, cur, doneName, checkSet, nodeCheck, isXML ) {
	var sibDir = dir == "previousSibling" && !isXML;
	for ( var i = 0, l = checkSet.length; i < l; i++ ) {
		var elem = checkSet[i];
		if ( elem ) {
			if ( sibDir && elem.nodeType === 1 ){
				elem.sizcache = doneName;
				elem.sizset = i;
			}
			elem = elem[dir];
			var match = false;

			while ( elem ) {
				if ( elem.sizcache === doneName ) {
					match = checkSet[elem.sizset];
					break;
				}

				if ( elem.nodeType === 1 && !isXML ){
					elem.sizcache = doneName;
					elem.sizset = i;
				}

				if ( elem.nodeName === cur ) {
					match = elem;
					break;
				}

				elem = elem[dir];
			}

			checkSet[i] = match;
		}
	}
}

function dirCheck( dir, cur, doneName, checkSet, nodeCheck, isXML ) {
	var sibDir = dir == "previousSibling" && !isXML;
	for ( var i = 0, l = checkSet.length; i < l; i++ ) {
		var elem = checkSet[i];
		if ( elem ) {
			if ( sibDir && elem.nodeType === 1 ) {
				elem.sizcache = doneName;
				elem.sizset = i;
			}
			elem = elem[dir];
			var match = false;

			while ( elem ) {
				if ( elem.sizcache === doneName ) {
					match = checkSet[elem.sizset];
					break;
				}

				if ( elem.nodeType === 1 ) {
					if ( !isXML ) {
						elem.sizcache = doneName;
						elem.sizset = i;
					}
					if ( typeof cur !== "string" ) {
						if ( elem === cur ) {
							match = true;
							break;
						}

					} else if ( Sizzle.filter( cur, [elem] ).length > 0 ) {
						match = elem;
						break;
					}
				}

				elem = elem[dir];
			}

			checkSet[i] = match;
		}
	}
}

var contains = document.compareDocumentPosition ?  function(a, b){
	return a.compareDocumentPosition(b) & 16;
} : function(a, b){
	return a !== b && (a.contains ? a.contains(b) : true);
};

var isXML = function(elem){
	return elem.nodeType === 9 && elem.documentElement.nodeName !== "HTML" ||
		!!elem.ownerDocument && elem.ownerDocument.documentElement.nodeName !== "HTML";
};

var posProcess = function(selector, context){
	var tmpSet = [], later = "", match,
		root = context.nodeType ? [context] : context;

	while ( (match = Expr.match.PSEUDO.exec( selector )) ) {
		later += match[0];
		selector = selector.replace( Expr.match.PSEUDO, "" );
	}

	selector = Expr.relative[selector] ? selector + "*" : selector;

	for ( var i = 0, l = root.length; i < l; i++ ) {
		Sizzle( selector, root[i], tmpSet );
	}

	return Sizzle.filter( later, tmpSet );
};


window.Sizzle = Sizzle;

})();

;(function(engine) {
  var extendElements = Prototype.Selector.extendElements;

  function select(selector, scope) {
    return extendElements(engine(selector, scope || document));
  }

  function match(element, selector) {
    return engine.matches(selector, [element]).length == 1;
  }

  Prototype.Selector.engine = engine;
  Prototype.Selector.select = select;
  Prototype.Selector.match = match;
})(Sizzle);

window.Sizzle = Prototype._original_property;
delete Prototype._original_property;

var Form = {
  reset: function(form) {
    form = $(form);
    form.reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && element.type != 'file' && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    var elements = $(form).getElementsByTagName('*'),
        element,
        arr = [ ],
        serializers = Form.Element.Serializers;
    for (var i = 0; element = elements[i]; i++) {
      arr.push(element);
    }
    return arr.inject([], function(elements, child) {
      if (serializers[child.tagName.toLowerCase()])
        elements.push(Element.extend(child));
      return elements;
    })
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return /^(?:input|select|textarea)$/i.test(element.tagName);
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/


Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {

  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !(/^(?:button|reset|submit)$/i.test(element.type))))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;

var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, value) {
    if (Object.isUndefined(value))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, currentValue, single = !Object.isArray(value);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        currentValue = this.optionValue(opt);
        if (single) {
          if (currentValue == value) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = value.include(currentValue);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/


Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
(function() {

  var Event = {
    KEY_BACKSPACE: 8,
    KEY_TAB:       9,
    KEY_RETURN:   13,
    KEY_ESC:      27,
    KEY_LEFT:     37,
    KEY_UP:       38,
    KEY_RIGHT:    39,
    KEY_DOWN:     40,
    KEY_DELETE:   46,
    KEY_HOME:     36,
    KEY_END:      35,
    KEY_PAGEUP:   33,
    KEY_PAGEDOWN: 34,
    KEY_INSERT:   45,

    cache: {}
  };

  var docEl = document.documentElement;
  var MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED = 'onmouseenter' in docEl
    && 'onmouseleave' in docEl;

  var _isButton;
  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    _isButton = function(event, code) {
      return event.button === buttonMap[code];
    };
  } else if (Prototype.Browser.WebKit) {
    _isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };
  } else {
    _isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  function isLeftClick(event)   { return _isButton(event, 0) }

  function isMiddleClick(event) { return _isButton(event, 1) }

  function isRightClick(event)  { return _isButton(event, 2) }

  function element(event) {
    event = Event.extend(event);

    var node = event.target, type = event.type,
     currentTarget = event.currentTarget;

    if (currentTarget && currentTarget.tagName) {
      if (type === 'load' || type === 'error' ||
        (type === 'click' && currentTarget.tagName.toLowerCase() === 'input'
          && currentTarget.type === 'radio'))
            node = currentTarget;
    }

    if (node.nodeType == Node.TEXT_NODE)
      node = node.parentNode;

    return Element.extend(node);
  }

  function findElement(event, expression) {
    var element = Event.element(event);
    if (!expression) return element;
    while (element) {
      if (Object.isElement(element) && Prototype.Selector.match(element, expression)) {
        return Element.extend(element);
      }
      element = element.parentNode;
    }
  }

  function pointer(event) {
    return { x: pointerX(event), y: pointerY(event) };
  }

  function pointerX(event) {
    var docElement = document.documentElement,
     body = document.body || { scrollLeft: 0 };

    return event.pageX || (event.clientX +
      (docElement.scrollLeft || body.scrollLeft) -
      (docElement.clientLeft || 0));
  }

  function pointerY(event) {
    var docElement = document.documentElement,
     body = document.body || { scrollTop: 0 };

    return  event.pageY || (event.clientY +
       (docElement.scrollTop || body.scrollTop) -
       (docElement.clientTop || 0));
  }


  function stop(event) {
    Event.extend(event);
    event.preventDefault();
    event.stopPropagation();

    event.stopped = true;
  }

  Event.Methods = {
    isLeftClick: isLeftClick,
    isMiddleClick: isMiddleClick,
    isRightClick: isRightClick,

    element: element,
    findElement: findElement,

    pointer: pointer,
    pointerX: pointerX,
    pointerY: pointerY,

    stop: stop
  };


  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    function _relatedTarget(event) {
      var element;
      switch (event.type) {
        case 'mouseover': element = event.fromElement; break;
        case 'mouseout':  element = event.toElement;   break;
        default: return null;
      }
      return Element.extend(element);
    }

    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return '[object Event]' }
    });

    Event.extend = function(event, element) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);

      Object.extend(event, {
        target: event.srcElement || element,
        relatedTarget: _relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });

      return Object.extend(event, methods);
    };
  } else {
    Event.prototype = window.Event.prototype || document.createEvent('HTMLEvents').__proto__;
    Object.extend(Event.prototype, methods);
    Event.extend = Prototype.K;
  }

  function _createResponder(element, eventName, handler) {
    var registry = Element.retrieve(element, 'prototype_event_registry');

    if (Object.isUndefined(registry)) {
      CACHE.push(element);
      registry = Element.retrieve(element, 'prototype_event_registry', $H());
    }

    var respondersForEvent = registry.get(eventName);
    if (Object.isUndefined(respondersForEvent)) {
      respondersForEvent = [];
      registry.set(eventName, respondersForEvent);
    }

    if (respondersForEvent.pluck('handler').include(handler)) return false;

    var responder;
    if (eventName.include(":")) {
      responder = function(event) {
        if (Object.isUndefined(event.eventName))
          return false;

        if (event.eventName !== eventName)
          return false;

        Event.extend(event, element);
        handler.call(element, event);
      };
    } else {
      if (!MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED &&
       (eventName === "mouseenter" || eventName === "mouseleave")) {
        if (eventName === "mouseenter" || eventName === "mouseleave") {
          responder = function(event) {
            Event.extend(event, element);

            var parent = event.relatedTarget;
            while (parent && parent !== element) {
              try { parent = parent.parentNode; }
              catch(e) { parent = element; }
            }

            if (parent === element) return;

            handler.call(element, event);
          };
        }
      } else {
        responder = function(event) {
          Event.extend(event, element);
          handler.call(element, event);
        };
      }
    }

    responder.handler = handler;
    respondersForEvent.push(responder);
    return responder;
  }

  function _destroyCache() {
    for (var i = 0, length = CACHE.length; i < length; i++) {
      Event.stopObserving(CACHE[i]);
      CACHE[i] = null;
    }
  }

  var CACHE = [];

  if (Prototype.Browser.IE)
    window.attachEvent('onunload', _destroyCache);

  if (Prototype.Browser.WebKit)
    window.addEventListener('unload', Prototype.emptyFunction, false);


  var _getDOMEventName = Prototype.K,
      translations = { mouseenter: "mouseover", mouseleave: "mouseout" };

  if (!MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED) {
    _getDOMEventName = function(eventName) {
      return (translations[eventName] || eventName);
    };
  }

  function observe(element, eventName, handler) {
    element = $(element);

    var responder = _createResponder(element, eventName, handler);

    if (!responder) return element;

    if (eventName.include(':')) {
      if (element.addEventListener)
        element.addEventListener("dataavailable", responder, false);
      else {
        element.attachEvent("ondataavailable", responder);
        element.attachEvent("onfilterchange", responder);
      }
    } else {
      var actualEventName = _getDOMEventName(eventName);

      if (element.addEventListener)
        element.addEventListener(actualEventName, responder, false);
      else
        element.attachEvent("on" + actualEventName, responder);
    }

    return element;
  }

  function stopObserving(element, eventName, handler) {
    element = $(element);

    var registry = Element.retrieve(element, 'prototype_event_registry');
    if (!registry) return element;

    if (!eventName) {
      registry.each( function(pair) {
        var eventName = pair.key;
        stopObserving(element, eventName);
      });
      return element;
    }

    var responders = registry.get(eventName);
    if (!responders) return element;

    if (!handler) {
      responders.each(function(r) {
        stopObserving(element, eventName, r.handler);
      });
      return element;
    }

    var responder = responders.find( function(r) { return r.handler === handler; });
    if (!responder) return element;

    if (eventName.include(':')) {
      if (element.removeEventListener)
        element.removeEventListener("dataavailable", responder, false);
      else {
        element.detachEvent("ondataavailable", responder);
        element.detachEvent("onfilterchange",  responder);
      }
    } else {
      var actualEventName = _getDOMEventName(eventName);
      if (element.removeEventListener)
        element.removeEventListener(actualEventName, responder, false);
      else
        element.detachEvent('on' + actualEventName, responder);
    }

    registry.set(eventName, responders.without(responder));

    return element;
  }

  function fire(element, eventName, memo, bubble) {
    element = $(element);

    if (Object.isUndefined(bubble))
      bubble = true;

    if (element == document && document.createEvent && !element.dispatchEvent)
      element = document.documentElement;

    var event;
    if (document.createEvent) {
      event = document.createEvent('HTMLEvents');
      event.initEvent('dataavailable', true, true);
    } else {
      event = document.createEventObject();
      event.eventType = bubble ? 'ondataavailable' : 'onfilterchange';
    }

    event.eventName = eventName;
    event.memo = memo || { };

    if (document.createEvent)
      element.dispatchEvent(event);
    else
      element.fireEvent(event.eventType, event);

    return Event.extend(event);
  }

  Event.Handler = Class.create({
    initialize: function(element, eventName, selector, callback) {
      this.element   = $(element);
      this.eventName = eventName;
      this.selector  = selector;
      this.callback  = callback;
      this.handler   = this.handleEvent.bind(this);
    },

    start: function() {
      Event.observe(this.element, this.eventName, this.handler);
      return this;
    },

    stop: function() {
      Event.stopObserving(this.element, this.eventName, this.handler);
      return this;
    },

    handleEvent: function(event) {
      var element = event.findElement(this.selector);
      if (element) this.callback.call(this.element, event, element);
    }
  });

  function on(element, eventName, selector, callback) {
    element = $(element);
    if (Object.isFunction(selector) && Object.isUndefined(callback)) {
      callback = selector, selector = null;
    }

    return new Event.Handler(element, eventName, selector, callback).start();
  }

  Object.extend(Event, Event.Methods);

  Object.extend(Event, {
    fire:          fire,
    observe:       observe,
    stopObserving: stopObserving,
    on:            on
  });

  Element.addMethods({
    fire:          fire,

    observe:       observe,

    stopObserving: stopObserving,

    on:            on
  });

  Object.extend(document, {
    fire:          fire.methodize(),

    observe:       observe.methodize(),

    stopObserving: stopObserving.methodize(),

    on:            on.methodize(),

    loaded:        false
  });

  if (window.Event) Object.extend(window.Event, Event);
  else window.Event = Event;
})();

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards, John Resig, and Diego Perini. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearTimeout(timer);
    document.loaded = true;
    document.fire('dom:loaded');
  }

  function checkReadyState() {
    if (document.readyState === 'complete') {
      document.stopObserving('readystatechange', checkReadyState);
      fireContentLoadedEvent();
    }
  }

  function pollDoScroll() {
    try { document.documentElement.doScroll('left'); }
    catch(e) {
      timer = pollDoScroll.defer();
      return;
    }
    fireContentLoadedEvent();
  }

  if (document.addEventListener) {
    document.addEventListener('DOMContentLoaded', fireContentLoadedEvent, false);
  } else {
    document.observe('readystatechange', checkReadyState);
    if (window == top)
      timer = pollDoScroll.defer();
  }

  Event.observe(window, 'load', fireContentLoadedEvent);
})();

Element.addMethods();

/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

var Position = {
  includeScrollOffsets: false,

  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },


  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

(function() {
  window.Selector = Class.create({
    initialize: function(expression) {
      this.expression = expression.strip();
    },

    findElements: function(rootElement) {
      return Prototype.Selector.select(this.expression, rootElement);
    },

    match: function(element) {
      return Prototype.Selector.match(element, this.expression);
    },

    toString: function() {
      return this.expression;
    },

    inspect: function() {
      return "#<Selector: " + this.expression + ">";
    }
  });

  Object.extend(Selector, {
    matchElements: function(elements, expression) {
      var match = Prototype.Selector.match,
          results = [];

      for (var i = 0, length = elements.length; i < length; i++) {
        var element = elements[i];
        if (match(element, expression)) {
          results.push(Element.extend(element));
        }
      }
      return results;
    },

    findElement: function(elements, expression, index) {
      index = index || 0;
      var matchIndex = 0, element;
      for (var i = 0, length = elements.length; i < length; i++) {
        element = elements[i];
        if (Prototype.Selector.match(element, expression) && index === matchIndex++) {
          return Element.extend(element);
        }
      }
    },

    findChildElements: function(element, expressions) {
      var selector = expressions.toArray().join(', ');
      return Prototype.Selector.select(selector, element || document);
    }
  });
})();

/*!
 *  script.aculo.us version 2.0.0_a6
 *  (c) 2005-2010 Thomas Fuchs
 *
 *  script.aculo.us is freely distributable under the terms of an MIT-style license.
 *----------------------------------------------------------------------------------*/



var S2 = {
  Version: '2.0.0_a6',

  Extensions: {}
};


Function.prototype.optionize = function(){
  var self = this, argumentNames = self.argumentNames(), optionIndex = this.length - 1;

  var method = function() {
    var args = $A(arguments);

    var options = (typeof args.last() === 'object') ? args.pop() : {};
    var prefilledArgs = [];
    if (optionIndex > 0) {
      prefilledArgs = ((args.length > 0 ? args : [null]).inGroupsOf(
       optionIndex).flatten()).concat(options);
    }

    return self.apply(this, prefilledArgs);
  };
  method.argumentNames = function() { return argumentNames; };
  return method;
};

Function.ABSTRACT = function() {
  throw "Abstract method. Implement in subclass.";
};

Object.extend(Number.prototype, {
  constrain: function(n1, n2) {
    var min = (n1 < n2) ? n1 : n2;
    var max = (n1 < n2) ? n2 : n1;

    var num = Number(this);

    if (num < min) num = min;
    if (num > max) num = max;

    return num;
  },

  nearer: function(n1, n2) {
    var num = Number(this);

    var diff1 = Math.abs(num - n1);
    var diff2 = Math.abs(num - n2);

    return (diff1 < diff2) ? n1 : n2;
  },

  tween: function(target, position) {
    return this + (target-this) * position;
  }
});


Object.propertize = function(property, object){
  return Object.isString(property) ? object[property] : property;
};

S2.CSS = {
  PROPERTY_MAP: {
    backgroundColor: 'color',
    borderBottomColor: 'color',
    borderBottomWidth: 'length',
    borderLeftColor: 'color',
    borderLeftWidth: 'length',
    borderRightColor: 'color',
    borderRightWidth: 'length',
    borderSpacing: 'length',
    borderTopColor: 'color',
    borderTopWidth: 'length',
    bottom: 'length',
    color: 'color',
    fontSize: 'length',
    fontWeight: 'integer',
    height: 'length',
    left: 'length',
    letterSpacing: 'length',
    lineHeight: 'length',
    marginBottom: 'length',
    marginLeft: 'length',
    marginRight: 'length',
    marginTop: 'length',
    maxHeight: 'length',
    maxWidth: 'length',
    minHeight: 'length',
    minWidth: 'length',
    opacity: 'number',
    outlineColor: 'color',
    outlineOffset: 'length',
    outlineWidth: 'length',
    paddingBottom: 'length',
    paddingLeft: 'length',
    paddingRight: 'length',
    paddingTop: 'length',
    right: 'length',
    textIndent: 'length',
    top: 'length',
    width: 'length',
    wordSpacing: 'length',
    zIndex: 'integer',
    zoom: 'number'
  },

  LENGTH: /^(([\+\-]?[0-9\.]+)(em|ex|px|in|cm|mm|pt|pc|\%))|0$/,

  NUMBER: /([\+-]*\d+\.?\d*)/,

  __parseStyleElement: document.createElement('div'),

  parseStyle: function(styleString) {
    S2.CSS.__parseStyleElement.innerHTML = '<div style="' + styleString + '"></div>';
    var style = S2.CSS.__parseStyleElement.childNodes[0].style, styleRules = {};

    S2.CSS.NUMERIC_PROPERTIES.each( function(property){
      if (style[property]) styleRules[property] = style[property];
    });

    S2.CSS.COLOR_PROPERTIES.each( function(property){
      if (style[property]) styleRules[property] = S2.CSS.colorFromString(style[property]);
    });

    if (Prototype.Browser.IE && styleString.include('opacity'))
      styleRules.opacity = styleString.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1];

    return styleRules;
  },

  normalizeColor: function(color) {
    if (!color || color == 'rgba(0, 0, 0, 0)' || color == 'transparent') color = '#ffffff';
    color = S2.CSS.colorFromString(color);
    return [
      parseInt(color.slice(1,3),16), parseInt(color.slice(3,5),16), parseInt(color.slice(5,7),16)
    ];
  },

  colorFromString: function(color) {
    var value = '#', cols, i;
    if (color.slice(0,4) == 'rgb(') {
      cols = color.slice(4,color.length-1).split(',');
      i=3; while(i--) value += parseInt(cols[2-i]).toColorPart();
    } else if (color.slice(0,1) == '#') {
        if (color.length==4) for(i=1;i<4;i++) value += (color.charAt(i) + color.charAt(i)).toLowerCase();
        if (color.length==7) value = color.toLowerCase();
    } else { value = color; }
    return (value.length==7 ? value : (arguments[1] || value));
  },

  interpolateColor: function(from, to, position){
    from = S2.CSS.normalizeColor(from);
    to = S2.CSS.normalizeColor(to);

    return '#' + [0,1,2].map(function(index){
      return Math.max(Math.min(from[index].tween(to[index], position).round(), 255), 0).toColorPart();
    }).join('');
  },

  interpolateNumber: function(from, to, position){
    return 1*((from||0).tween(to, position).toFixed(3));
  },

  interpolateLength: function(from, to, position){
    if (!from || parseFloat(from) === 0) {
      from = '0' + to.gsub(S2.CSS.NUMBER,'');
    }
    to.scan(S2.CSS.NUMBER, function(match){ to = 1*(match[1]); });
    return from.gsub(S2.CSS.NUMBER, function(match){
      return (1*(parseFloat(match[1]).tween(to, position).toFixed(3))).toString();
    });
  },

  interpolateInteger: function(from, to, position){
    return parseInt(from).tween(to, position).round();
  },

  interpolate: function(property, from, to, position){
    return S2.CSS['interpolate'+S2.CSS.PROPERTY_MAP[property.camelize()].capitalize()](from, to, position);
  },

  ElementMethods: {
    getStyles: function(element) {
      var css = document.defaultView.getComputedStyle($(element), null);
      return S2.CSS.PROPERTIES.inject({ }, function(styles, property) {
        styles[property] = css[property];
        return styles;
      });
    }
  }
};

S2.CSS.PROPERTIES = [];
for(property in S2.CSS.PROPERTY_MAP) S2.CSS.PROPERTIES.push(property);

S2.CSS.NUMERIC_PROPERTIES = S2.CSS.PROPERTIES.findAll(function(property){ return !property.endsWith('olor') });
S2.CSS.COLOR_PROPERTIES   = S2.CSS.PROPERTIES.findAll(function(property){ return property.endsWith('olor') });

if (!(document.defaultView && document.defaultView.getComputedStyle)) {
  S2.CSS.ElementMethods.getStyles = function(element) {
    element = $(element);
    var css = element.currentStyle, styles;
    styles = S2.CSS.PROPERTIES.inject({ }, function(hash, property) {
      hash[property] = css[property];
      return hash;
    });
    if (!styles.opacity) styles.opacity = element.getOpacity();
    return styles;
  };
};

Element.addMethods(S2.CSS.ElementMethods);

S2.FX = (function(){
  var queues = [], globalQueue,
    heartbeat, activeEffects = 0;

  function beatOnDemand(dir){
    heartbeat[(activeEffects += dir) > 0 ? 'start' : 'stop']();
  }

  function renderQueues(){
    queues.invoke('render', heartbeat.getTimestamp());
  }

  function initialize(initialHeartbeat){
    if(globalQueue) return;
    queues.push(globalQueue = new S2.FX.Queue());
    S2.FX.DefaultOptions.queue = globalQueue;
    heartbeat = initialHeartbeat || new S2.FX.Heartbeat();

    document
      .observe('effect:heartbeat', renderQueues)
      .observe('effect:queued',    beatOnDemand.curry(1))
      .observe('effect:dequeued',  beatOnDemand.curry(-1));
  }

  return {
    initialize: initialize,
    getQueues: function(){ return queues; },
    addQueue: function(queue){ queues.push(queue); },
    getHeartbeat: function(){ return heartbeat; },
    setHeartbeat: function(newHeartbeat){
      heartbeat = newHeartbeat;
    }
  }
})();

Object.extend(S2.FX, {
  DefaultOptions: {
    transition: 'sinusoidal',
    position:   'parallel',
    fps:        60,
    duration:   .2
  },

  elementDoesNotExistError: {
    name: 'ElementDoesNotExistError',
    message: 'The specified DOM element does not exist, but is required for this effect to operate'
  },

  parseOptions: function(options) {
    if (Object.isNumber(options))
      options = { duration: options };
    else if (Object.isFunction(options))
      options = { after: options };
    else if (Object.isString(options))
      options = { duration: options == 'slow' ? 1 : options == 'fast' ? .1 : .2 };

    return options || {};
  }
});

S2.FX.Base = Class.create({
  initialize: function(options) {
    S2.FX.initialize();
    this.updateWithoutWrappers = this.update;

    if(options && options.queue && !S2.FX.getQueues().include(options.queue))
      S2.FX.addQueue(options.queue);

    this.setOptions(options);
    this.duration = this.options.duration*1000;
    this.state = 'idle';

    ['after','before'].each(function(method) {
      this[method] = function(method) {
        method(this);
        return this;
      }
    }, this);
  },

  setOptions: function(options) {
    options = S2.FX.parseOptions(options);

    if (!this.options) {
      this.options = Object.extend(Object.extend({},S2.FX.DefaultOptions), options);
      if(options.tween) this.options.transition = options.tween;
    }

    if (this.options.beforeUpdate || this.options.afterUpdate) {
      this.update = this.updateWithoutWrappers.wrap( function(proceed,position){
        if (this.options.beforeUpdate) this.options.beforeUpdate(this, position);
        proceed(position);
        if (this.options.afterUpdate) this.options.afterUpdate(this, position);
      }.bind(this));
    }
    if(this.options.transition === false)
      this.options.transition = S2.FX.Transitions.linear;
    this.options.transition = Object.propertize(this.options.transition, S2.FX.Transitions);
  },

  play: function(options) {
    this.setOptions(options);
    this.frameCount = 0;
    this.options.queue.add(this);
    this.maxFrames = this.options.fps * this.duration / 1000;
    return this;
  },

  render: function(timestamp) {
    if (timestamp >= this.startsAt) {
      if (this.state == 'idle') {
        if (this.options.before) this.options.before(this);
        if (this.setup) this.setup();
        this.state = 'running';
        this.update(this.options.transition(0));
        this.frameCount++;
        return this;
      }
      if (timestamp >= this.endsAt && !(this.state == 'finished')) {
        this.update(this.options.transition(1));
        if (this.teardown) this.teardown();
        if (this.options.after) this.options.after(this);
        this.state = 'finished';
      } else if (this.state == 'running') {
        var position = 1 - (this.endsAt - timestamp) / this.duration;
        if ((this.maxFrames * position).floor() > this.frameCount) {
          this.update(this.options.transition(position));
          this.frameCount++;
        }
      }
    }
    return this;
  },

  cancel: function(after) {
    if(!this.state == 'running') return;
    if (this.teardown) this.teardown();
    if (after && this.options.after) this.options.after(this);
    this.state = 'finished';
  },

  finish: function(after) {
    if(!this.state == 'running') return;
    this.update(this.options.transition(1));
    this.cancel(true);
  },

  inspect: function() {
    return '#<S2.FX:' + [this.state, this.startsAt, this.endsAt].inspect() + '>';
  },

  update: Prototype.emptyFunction
});

S2.FX.Element = Class.create(S2.FX.Base, {
  initialize: function($super, element, options) {
    if(!(this.element = $(element)))
      throw(S2.FX.elementDoesNotExistError);
    this.operators = [];
    return $super(options);
  },

  animate: function() {
    var args = $A(arguments), operator =  args.shift();
    operator = operator.charAt(0).toUpperCase() + operator.substring(1);
    this.operators.push(new S2.FX.Operators[operator](this, args[0], args[1] || {}));
  },

  play: function($super, element, options) {
    if (element) this.element = $(element);
    return $super(options);
  },

  update: function(position) {
    this.operators.invoke('render', position);
  }
});
S2.FX.Heartbeat = Class.create({
  initialize: function(options) {
    this.options = Object.extend({
      framerate: Prototype.Browser.MobileSafari ? 20 : 60
    }, options);
    this.beat = this.beat.bind(this);
  },

  start: function() {
    if (this.heartbeatInterval) return;
    this.heartbeatInterval =
      setInterval(this.beat, 1000/this.options.framerate);
    this.updateTimestamp();
  },

  stop: function() {
    if (!this.heartbeatInterval) return;
    clearInterval(this.heartbeatInterval);
    this.heartbeatInterval = null;
    this.timestamp = null;
  },

  beat: function() {
    this.updateTimestamp();
    document.fire('effect:heartbeat');
  },

  getTimestamp: function() {
    return this.timestamp || this.generateTimestamp();
  },

  generateTimestamp: function() {
    return new Date().getTime();
  },

  updateTimestamp: function() {
    this.timestamp = this.generateTimestamp();
  }
});
S2.FX.Queue = (function(){
  return function(){
    var effects = [];

    function getEffects(){
      return effects;
    }

    function active(){
      return effects.length > 0;
    }

    function add(effect){
      calculateTiming(effect);
      effects.push(effect);
      document.fire('effect:queued', this);
      return this;
    }

    function remove(effect){
      effects = effects.without(effect);
      delete effect;
      document.fire('effect:dequeued', this);
      return this;
    }

    function render(timestamp){
      effects.invoke('render', timestamp);
      effects.select(function(effect) {
        return effect.state == 'finished';
      }).each(remove);
      return this;
    }

    function calculateTiming(effect){
      var position = effect.options.position || 'parallel',
        startsAt = S2.FX.getHeartbeat().getTimestamp();

      if (position == 'end')
        startsAt = effects.without(effect).pluck('endsAt').max() || startsAt;

      effect.startsAt =
        startsAt + (effect.options.delay || 0) * 1000;
      effect.endsAt =
        effect.startsAt + (effect.options.duration || 1) * 1000;
    }

    Object.extend(this, {
      getEffects: getEffects,
      active: active,
      add: add,
      remove: remove,
      render: render
    });
  }
})();

S2.FX.Attribute = Class.create(S2.FX.Base, {
  initialize: function($super, object, from, to, options, method) {
    object = Object.isString(object) ? $(object) : object;

    this.method = Object.isFunction(method) ? method.bind(object) :
      Object.isFunction(object[method]) ? object[method].bind(object) :
      function(value) { object[method] = value };

    this.to = to;
    this.from = from;

    return $super(options);
  },

  update: function(position) {
    this.method(this.from.tween(this.to, position));
  }
});
S2.FX.Style = Class.create(S2.FX.Element, {
  setup: function() {
    this.animate('style', this.element, { style: this.options.style });
  }
});
S2.FX.Operators = { };

S2.FX.Operators.Base = Class.create({
  initialize: function(effect, object, options) {
    this.effect = effect;
    this.object = object;
    this.options = Object.extend({
      transition: Prototype.K
    }, options);
  },

  inspect: function() {
    return "#<S2.FX.Operators.Base:" + this.lastValue + ">";
  },

  setup: function() {
  },

  valueAt: function(position) {
  },

  applyValue: function(value) {
  },

  render: function(position) {
    var value = this.valueAt(this.options.transition(position));
    this.applyValue(value);
    this.lastValue = value;
  }
});

S2.FX.Operators.Style = Class.create(S2.FX.Operators.Base, {
  initialize: function($super, effect, object, options) {
    $super(effect, object, options);
    this.element = $(this.object);

    this.style = Object.isString(this.options.style) ?
      S2.CSS.parseStyle(this.options.style) : this.options.style;

    this.tweens = [];
    for(var item in this.style){
      var property = item.underscore().dasherize(),
        from = this.element.getStyle(property), to = this.style[item];

      if(from!=to)
        this.tweens.push([
          property, S2.CSS.interpolate.curry(property, from, to),
          item in this.options.propertyTransitions ?
            Object.propertize(this.options.propertyTransitions[item], S2.FX.Transitions) : Prototype.K
        ]);
    }
  },

  valueAt: function(position) {
    return this.tweens.map( function(tween){
      return tween[0]+':'+tween[1](tween[2](position));
    }).join(';')
  },

  applyValue: function(value) {
    if(this.currentStyle == value) return;
    this.element.setStyle(value);
    this.currentStyle = value;
  }
});

S2.FX.Morph = Class.create(S2.FX.Element, {
  setup: function() {
    if (this.options.change)
      this.setupWrappers();
    else if (this.options.style)
      this.animate('style', this.destinationElement || this.element, {
        style: this.options.style,
        propertyTransitions: this.options.propertyTransitions || { }
      });
  },

  teardown: function() {
    if (this.options.change)
      this.teardownWrappers();
  },

  setupWrappers: function() {
    var elementFloat = this.element.getStyle("float"),
      sourceHeight, sourceWidth,
      destinationHeight, destinationWidth,
      maxHeight;

    this.transitionElement = new Element('div').setStyle({ position: "relative", overflow: "hidden", 'float': elementFloat });
    this.element.setStyle({ 'float': "none" }).insert({ before: this.transitionElement });

    this.sourceElementWrapper = this.element.cloneWithoutIDs().wrap('div');
    this.destinationElementWrapper = this.element.wrap('div');

    this.transitionElement.insert(this.sourceElementWrapper).insert(this.destinationElementWrapper);

    sourceHeight = this.sourceElementWrapper.getHeight();
    sourceWidth = this.sourceElementWrapper.getWidth();

    this.options.change();

    destinationHeight = this.destinationElementWrapper.getHeight();
    destinationWidth  = this.destinationElementWrapper.getWidth();

    this.outerWrapper = new Element("div");
    this.transitionElement.insert({ before: this.outerWrapper });
    this.outerWrapper.setStyle({
      overflow: "hidden", height: sourceHeight + "px", width: sourceWidth + "px"
    }).appendChild(this.transitionElement);

    maxHeight = Math.max(destinationHeight, sourceHeight), maxWidth = Math.max(destinationWidth, sourceWidth);

    this.transitionElement.setStyle({ height: sourceHeight + "px", width: sourceWidth + "px" });
    this.sourceElementWrapper.setStyle({ position: "absolute", height: maxHeight + "px", width: maxWidth + "px", top: 0, left: 0 });
    this.destinationElementWrapper.setStyle({ position: "absolute", height: maxHeight + "px", width: maxWidth + "px", top: 0, left: 0, opacity: 0, zIndex: 2000 });

    this.outerWrapper.insert({ before: this.transitionElement }).remove();

    this.animate('style', this.transitionElement, { style: 'height:' + destinationHeight + 'px; width:' + destinationWidth + 'px' });
    this.animate('style', this.destinationElementWrapper, { style: 'opacity: 1.0' });
  },

  teardownWrappers: function() {
    var destinationElement = this.destinationElementWrapper.down();

    if (destinationElement)
      this.transitionElement.insert({ before: destinationElement });

    this.transitionElement.remove();
  }
});
S2.FX.Parallel = Class.create(S2.FX.Base, {
  initialize: function($super, effects, options) {
    this.effects = effects || [];
    return $super(options || {});
  },

  setup: function() {
    this.effects.invoke('setup');
  },

  update: function(position) {
    this.effects.invoke('update', position);
  }
});

S2.FX.Operators.Scroll = Class.create(S2.FX.Operators.Base, {
  initialize: function($super, effect, object, options) {
    $super(effect, object, options);
    this.start = object.scrollTop;
    this.end = this.options.scrollTo;
  },

  valueAt: function(position) {
    return this.start + ((this.end - this.start)*position);
  },

  applyValue: function(value){
    this.object.scrollTop = value.round();
  }
});

S2.FX.Scroll = Class.create(S2.FX.Element, {
  setup: function() {
    this.animate('scroll', this.element, { scrollTo: this.options.to });
  }
});


S2.FX.SlideDown = Class.create(S2.FX.Element, {
  setup: function() {
    var element = this.destinationElement || this.element;
    var layout = element.getLayout();

    var style = {
      height:        layout.get('height') + 'px',
      paddingTop:    layout.get('padding-top') + 'px',
      paddingBottom: layout.get('padding-bottom') + 'px'
    };

    element.setStyle({
      height:         '0',
      paddingTop:     '0',
      paddingBottom:  '0',
      overflow:       'hidden'
    }).show();

    this.animate('style', element, {
      style: style,
      propertyTransitions: {}
    });
  },

  teardown: function() {
    var element = this.destinationElement || this.element;
    element.setStyle({
      height:         '',
      paddingTop:     '',
      paddingBottom:  '',
      overflow:       'visible'
    });
  }
});

S2.FX.SlideUp = Class.create(S2.FX.Morph, {
  setup: function() {
    var element = this.destinationElement || this.element;
    var layout = element.getLayout();

    var style = {
      height:        '0px',
      paddingTop:    '0px',
      paddingBottom: '0px'
    };

    element.setStyle({ overflow: 'hidden' });

    this.animate('style', element, {
      style: style,
      propertyTransitions: {}
    });
  },

  teardown: function() {
    var element = this.destinationElement || this.element;
    element.setStyle({
      height:         '',
      paddingTop:     '',
      paddingBottom:  '',
      overflow:       'visible'
    }).hide();
  }
});


S2.FX.Transitions = {

  linear: Prototype.K,

  sinusoidal: function(pos) {
    return (-Math.cos(pos*Math.PI)/2) + 0.5;
  },

  reverse: function(pos) {
    return 1 - pos;
  },

  mirror: function(pos, transition) {
    transition = transition || S2.FX.Transitions.sinusoidal;
    if(pos<0.5)
      return transition(pos*2);
    else
      return transition(1-(pos-0.5)*2);
  },

  flicker: function(pos) {
    var pos = pos + (Math.random()-0.5)/5;
    return S2.FX.Transitions.sinusoidal(pos < 0 ? 0 : pos > 1 ? 1 : pos);
  },

  wobble: function(pos) {
    return (-Math.cos(pos*Math.PI*(9*pos))/2) + 0.5;
  },

  pulse: function(pos, pulses) {
    return (-Math.cos((pos*((pulses||5)-.5)*2)*Math.PI)/2) + .5;
  },

  blink: function(pos, blinks) {
    return Math.round(pos*(blinks||5)) % 2;
  },

  spring: function(pos) {
    return 1 - (Math.cos(pos * 4.5 * Math.PI) * Math.exp(-pos * 6));
  },

  none: Prototype.K.curry(0),

  full: Prototype.K.curry(1)
};

/*!
 *  Copyright (c) 2006 Apple Computer, Inc. All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 *
 *  1. Redistributions of source code must retain the above copyright notice,
 *  this list of conditions and the following disclaimer.
 *
 *  2. Redistributions in binary form must reproduce the above copyright notice,
 *  this list of conditions and the following disclaimer in the documentation
 *  and/or other materials provided with the distribution.
 *
 *  3. Neither the name of the copyright holder(s) nor the names of any
 *  contributors may be used to endorse or promote products derived from
 *  this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 *  THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
 *  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 *  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 *  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 *  ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

(function(){
  function CubicBezierAtTime(t,p1x,p1y,p2x,p2y,duration) {
    var ax=0,bx=0,cx=0,ay=0,by=0,cy=0;
    function sampleCurveX(t) {return ((ax*t+bx)*t+cx)*t;};
    function sampleCurveY(t) {return ((ay*t+by)*t+cy)*t;};
    function sampleCurveDerivativeX(t) {return (3.0*ax*t+2.0*bx)*t+cx;};
    function solveEpsilon(duration) {return 1.0/(200.0*duration);};
    function solve(x,epsilon) {return sampleCurveY(solveCurveX(x,epsilon));};
    function fabs(n) {if(n>=0) {return n;}else {return 0-n;}};
    function solveCurveX(x,epsilon) {
      var t0,t1,t2,x2,d2,i;
      for(t2=x, i=0; i<8; i++) {x2=sampleCurveX(t2)-x; if(fabs(x2)<epsilon) {return t2;} d2=sampleCurveDerivativeX(t2); if(fabs(d2)<1e-6) {break;} t2=t2-x2/d2;}
      t0=0.0; t1=1.0; t2=x; if(t2<t0) {return t0;} if(t2>t1) {return t1;}
      while(t0<t1) {x2=sampleCurveX(t2); if(fabs(x2-x)<epsilon) {return t2;} if(x>x2) {t0=t2;}else {t1=t2;} t2=(t1-t0)*.5+t0;}
      return t2; // Failure.
    };
    cx=3.0*p1x; bx=3.0*(p2x-p1x)-cx; ax=1.0-cx-bx; cy=3.0*p1y; by=3.0*(p2y-p1y)-cy; ay=1.0-cy-by;
    return solve(t, solveEpsilon(duration));
  }
  S2.FX.cubicBezierTransition = function(x1, y1, x2, y2){
    return (function(pos){
      return CubicBezierAtTime(pos,x1,y1,x2,y2,1);
    });
  }
})();

S2.FX.Transitions.webkitCubic =
  S2.FX.cubicBezierTransition(0.25,0.1,0.25,1);
S2.FX.Transitions.webkitEaseInOut =
  S2.FX.cubicBezierTransition(0.42,0.0,0.58,1.0);

/*!
 *  TERMS OF USE - EASING EQUATIONS
 *  Open source under the BSD License.
 *  Easing Equations (c) 2003 Robert Penner, all rights reserved.
 */

Object.extend(S2.FX.Transitions, {
  easeInQuad: function(pos){
     return Math.pow(pos, 2);
  },

  easeOutQuad: function(pos){
    return -(Math.pow((pos-1), 2) -1);
  },

  easeInOutQuad: function(pos){
    if ((pos/=0.5) < 1) return 0.5*Math.pow(pos,2);
    return -0.5 * ((pos-=2)*pos - 2);
  },

  easeInCubic: function(pos){
    return Math.pow(pos, 3);
  },

  easeOutCubic: function(pos){
    return (Math.pow((pos-1), 3) +1);
  },

  easeInOutCubic: function(pos){
    if ((pos/=0.5) < 1) return 0.5*Math.pow(pos,3);
    return 0.5 * (Math.pow((pos-2),3) + 2);
  },

  easeInQuart: function(pos){
    return Math.pow(pos, 4);
  },

  easeOutQuart: function(pos){
    return -(Math.pow((pos-1), 4) -1)
  },

  easeInOutQuart: function(pos){
    if ((pos/=0.5) < 1) return 0.5*Math.pow(pos,4);
    return -0.5 * ((pos-=2)*Math.pow(pos,3) - 2);
  },

  easeInQuint: function(pos){
    return Math.pow(pos, 5);
  },

  easeOutQuint: function(pos){
    return (Math.pow((pos-1), 5) +1);
  },

  easeInOutQuint: function(pos){
    if ((pos/=0.5) < 1) return 0.5*Math.pow(pos,5);
    return 0.5 * (Math.pow((pos-2),5) + 2);
  },

  easeInSine: function(pos){
    return -Math.cos(pos * (Math.PI/2)) + 1;
  },

  easeOutSine: function(pos){
    return Math.sin(pos * (Math.PI/2));
  },

  easeInOutSine: function(pos){
    return (-.5 * (Math.cos(Math.PI*pos) -1));
  },

  easeInExpo: function(pos){
    return (pos==0) ? 0 : Math.pow(2, 10 * (pos - 1));
  },

  easeOutExpo: function(pos){
    return (pos==1) ? 1 : -Math.pow(2, -10 * pos) + 1;
  },

  easeInOutExpo: function(pos){
    if(pos==0) return 0;
    if(pos==1) return 1;
    if((pos/=0.5) < 1) return 0.5 * Math.pow(2,10 * (pos-1));
    return 0.5 * (-Math.pow(2, -10 * --pos) + 2);
  },

  easeInCirc: function(pos){
    return -(Math.sqrt(1 - (pos*pos)) - 1);
  },

  easeOutCirc: function(pos){
    return Math.sqrt(1 - Math.pow((pos-1), 2))
  },

  easeInOutCirc: function(pos){
    if((pos/=0.5) < 1) return -0.5 * (Math.sqrt(1 - pos*pos) - 1);
    return 0.5 * (Math.sqrt(1 - (pos-=2)*pos) + 1);
  },

  easeOutBounce: function(pos){
    if ((pos) < (1/2.75)) {
      return (7.5625*pos*pos);
    } else if (pos < (2/2.75)) {
      return (7.5625*(pos-=(1.5/2.75))*pos + .75);
    } else if (pos < (2.5/2.75)) {
      return (7.5625*(pos-=(2.25/2.75))*pos + .9375);
    } else {
      return (7.5625*(pos-=(2.625/2.75))*pos + .984375);
    }
  },

  easeInBack: function(pos){
    var s = 1.70158;
    return (pos)*pos*((s+1)*pos - s);
  },

  easeOutBack: function(pos){
    var s = 1.70158;
    return (pos=pos-1)*pos*((s+1)*pos + s) + 1;
  },

  easeInOutBack: function(pos){
    var s = 1.70158;
    if((pos/=0.5) < 1) return 0.5*(pos*pos*(((s*=(1.525))+1)*pos -s));
    return 0.5*((pos-=2)*pos*(((s*=(1.525))+1)*pos +s) +2);
  },

  elastic: function(pos) {
    return -1 * Math.pow(4,-8*pos) * Math.sin((pos*6-1)*(2*Math.PI)/2) + 1;
  },

  swingFromTo: function(pos) {
    var s = 1.70158;
    return ((pos/=0.5) < 1) ? 0.5*(pos*pos*(((s*=(1.525))+1)*pos - s)) :
      0.5*((pos-=2)*pos*(((s*=(1.525))+1)*pos + s) + 2);
  },

  swingFrom: function(pos) {
    var s = 1.70158;
    return pos*pos*((s+1)*pos - s);
  },

  swingTo: function(pos) {
    var s = 1.70158;
    return (pos-=1)*pos*((s+1)*pos + s) + 1;
  },

  bounce: function(pos) {
    if (pos < (1/2.75)) {
        return (7.5625*pos*pos);
    } else if (pos < (2/2.75)) {
        return (7.5625*(pos-=(1.5/2.75))*pos + .75);
    } else if (pos < (2.5/2.75)) {
        return (7.5625*(pos-=(2.25/2.75))*pos + .9375);
    } else {
        return (7.5625*(pos-=(2.625/2.75))*pos + .984375);
    }
  },

  bouncePast: function(pos) {
    if (pos < (1/2.75)) {
        return (7.5625*pos*pos);
    } else if (pos < (2/2.75)) {
        return 2 - (7.5625*(pos-=(1.5/2.75))*pos + .75);
    } else if (pos < (2.5/2.75)) {
        return 2 - (7.5625*(pos-=(2.25/2.75))*pos + .9375);
    } else {
        return 2 - (7.5625*(pos-=(2.625/2.75))*pos + .984375);
    }
  },

  easeFromTo: function(pos) {
    if ((pos/=0.5) < 1) return 0.5*Math.pow(pos,4);
    return -0.5 * ((pos-=2)*Math.pow(pos,3) - 2);
  },

  easeFrom: function(pos) {
    return Math.pow(pos,4);
  },

  easeTo: function(pos) {
    return Math.pow(pos,0.25);
  }
});
Prototype.BrowserFeatures.WebkitCSSTransitions = false;
S2.Extensions.webkitCSSTransitions = false;

(function(){
  try {
    document.createEvent("WebKitTransitionEvent");
  } catch(e) {
    return;
  }

  Prototype.BrowserFeatures.WebkitCSSTransitions = true;
  S2.Extensions.webkitCSSTransitions = true;

  if (Prototype.BrowserFeatures.WebkitCSSTransitions) {
    $w('webkitBorderTopLeftRadius webkitBorderTopRightRadius '+
       'webkitBorderBottomLeftRadius webkitBorderBottomRightRadius '+
       'webkitBackgroundSize').each(function(property){
      S2.CSS.PROPERTIES.push(property);
    });
    S2.CSS.NUMERIC_PROPERTIES =
      S2.CSS.PROPERTIES.findAll(function(property){
        return !property.endsWith('olor')
      });

    S2.FX.Operators.WebkitCssTransition = Class.create(S2.FX.Operators.Base, {
      initialize: function($super, effect, object, options) {
        $super(effect, object, options);
        this.element = $(this.object);
        if (!Object.isString(this.options.style)) {
          this.style = $H(this.options.style);
        } else {
          if (this.options.style.include(':')) {
            this.style = $H(S2.CSS.parseStyle(this.options.style));

          } else {
            this.element.addClassName(options.style);
            this.style = $H(this.element.getStyles());
            this.element.removeClassName(options.style);

            var css = this.element.getStyles();
            this.style = this.style.reject(function(style) { return style.value == css[style.key] });
          }
        }
        this.properties = [];
        this.targetStyle = '';

        this.style.each(function(pair) {
          var property = pair[0].underscore().dasherize(), target = pair[1], unit = '',
            source = this.element.getStyle(property), tween = '';

          if(property.startsWith('webkit')) property = '-' + property;

          this.properties.push(property);
          this.targetStyle += ';'+property+':'+target;
        }, this);
      },

      render: function(){
        this.element.style.webkitTransitionProperty = this.properties.join(',');
        this.element.style.webkitTransitionDuration = (this.effect.duration/1000).toFixed(3)+'s';

        for(t in S2.FX.Operators.WebkitCssTransition.TIMING_MAP)
          if(S2.FX.Transitions[t] === this.effect.options.transition)
            this.element.style.webkitTransitionTimingFunction =
              S2.FX.Operators.WebkitCssTransition.TIMING_MAP[t];

        this.element.setStyle(this.targetStyle);
        this.render = Prototype.emptyFunction;
      }
    });

    S2.FX.Operators.WebkitCssTransition.TIMING_MAP = {
      linear: 'linear',
      sinusoidal: 'ease-in-out'
    };

    timingFunctionForTransition = function(transition){
      var timing = null;
      for(t in S2.FX.Operators.WebkitCssTransition.TIMING_MAP)
        if(S2.FX.Transitions[t] === transition)
          timing = S2.FX.Operators.WebkitCssTransition.TIMING_MAP[t];
      return timing;
    };

    isWebkitCSSTransitionCompatible = function(effect){
      return (S2.Extensions.webkitCSSTransitions &&
        !((effect.options.engine||'')=='javascript') &&
        (timingFunctionForTransition(effect.options.transition)) &&
        !(effect.options.propertyTransitions));
    };

    S2.FX.Morph = Class.create(S2.FX.Morph, {
      setup: function(){
        if (this.options.change)
          this.setupWrappers();
        else if (this.options.style){
          this.engine = isWebkitCSSTransitionCompatible(this) ? 'webkit' : 'javascript';
          this.animate(this.engine == 'webkit' ?
            'webkitCssTransition' : 'style', this.destinationElement || this.element, {
            style: this.options.style,
            propertyTransitions: this.options.propertyTransitions || { }
          });
        }
      },
      render: function($super, position){
        if(this.engine == 'webkit'){
          if(this.options.before)
            this.element.beforeStartEffect = this.options.before;

          if(this.options.after) {
            this.element.afterFinishEffect = this.options.after;
            delete this.options.after;
          }

          this.element._effect = this;
        }
        return $super(position);
      }
    });

    Element.addMethods({
      morph: function(element, style, options){
        if (Object.isNumber(options)) options = { duration: options };
        return element.effect('morph', Object.extend(options, {style: style}));
      }.optionize()
    });

    S2.FX.webkitTransitionStartEvent =
    document.observe('webkitTransitionStart', function(event){
      var element = event.element();
      if(!element || !element.beforeStartEffect) return;
      element.beforeStartEffect();
      element.beforeStartEffect = null;
    });

    S2.FX.webkitTransitionEndEvent =
    document.observe('webkitTransitionEnd', function(event){
      var element = event.element();
      if(!element) return;
      (function(){ element.style.webkitTransitionDuration = ''; }).defer();
      if(!element.afterFinishEffect) return;
      element.afterFinishEffect();
      element.afterFinishEffect = null;
    });
  }
})();

S2.UI = {};


Object.deepExtend = function(destination, source) {
  for (var property in source) {
    if (source[property] && source[property].constructor &&
     source[property].constructor === Object) {
      destination[property] = destination[property] || {};
      arguments.callee(destination[property], source[property]);
    } else {
      destination[property] = source[property];
    }
  }
  return destination;
};

S2.UI.Mixin = {};

S2.UI.Mixin.Configurable = {
  setOptions: function(options) {
    if (!this.options) {
      this.options = {};
      var constructor = this.constructor;
      if (constructor.superclass) {
        var chain = [], klass = constructor;
        while (klass = klass.superclass)
          chain.push(klass);
        chain = chain.reverse();

        for (var i = 0, l = chain.length; i < l; i++)
          Object.deepExtend(this.options, chain[i].DEFAULT_OPTIONS || {});
      }

      Object.deepExtend(this.options, constructor.DEFAULT_OPTIONS || {});
    }
    return Object.deepExtend(this.options, options || {});
  }
};

S2.UI.Mixin.Trackable = {
  register: function() {
    var klass = this.constructor;
    if (!klass.instances) {
      klass.instances = [];
    }
    if (!klass.instances.include(this)) {
      klass.instances.push(this);
    }

    if (Object.isFunction(klass.onRegister)) {
      klass.onRegister.call(klass, this);
    }
  },

  unregister: function() {
    var klass = this.constructor;
    klass.instances = klass.instances.without(this);
    if (Object.isFunction(klass.onRegister)) {
      klass.onUnregister.call(klass, this);
    }
  }
};


S2.UI.Mixin.Shim = {
  __SHIM_TEMPLATE: new Template(
    "<iframe frameborder='0' tabindex='-1' src='javascript:false;' " +
      "style='display:block;position:absolute;z-index:-1;overflow:hidden; " +
      "filter:Alpha(Opacity=\"0\");" +
      "top:expression(((parseInt(this.parentNode.currentStyle.borderTopWidth)||0)*-1)+\'px\');" +
       "left:expression(((parseInt(this.parentNode.currentStyle.borderLeftWidth)||0)*-1)+\'px\');" +
       "width:expression(this.parentNode.offsetWidth+\'px\');" +
       "height:expression(this.parentNode.offsetHeight+\'px\');" +
    "' id='#{0}'></iframe>"
  ),

  createShim: function(element) {
    this.__shim_isie6 = (Prototype.Browser.IE &&
     (/6.0/).test(navigator.userAgent));
    if (!this.__shim_isie6) return;

    element = $(element || this.element);
    if (!element) return;

    this.__shimmed = element;

    var id = element.identify() + '_iframeshim', shim = $(id);

    if (shim) shim.remove();

    element.insert({
      top: this.__SHIM_TEMPLATE.evaluate([id])
    });

    this.__shim_id = id;
  },

  adjustShim: function() {
    if (!this.__shim_isie6) return;
    var shim = this.__shimmed.down('iframe#' + this.__shim_id);
    var element = this.__shimmed;
    if (!shim) return;

    shim.setStyle({
      width:  element.offsetWidth  + 'px',
      height: element.offsetHeight + 'px'
    });
  },

  destroyShim: function() {
    if (!this.__shim_isie6) return;
    var shim = this.__shimmed.down('iframe#' + this.__shim_id);
    if (shim) {
      shim.remove();
    }

    this.__shimmed = null;
  }
};

Object.extend(S2.UI, {
  addClassNames: function(elements, classNames) {
    if (Object.isElement(elements)) {
      elements = [elements];
    }

    if (Object.isString(classNames)) {
      classNames = classNames.split(' ');
    }

    var j, className;
    for (var i = 0, element; element = elements[i]; i++) {
      for (j = 0; className = classNames[j]; j++) {
        element.addClassName(className);
      }
    }

    return elements;
  },

  removeClassNames: function(elements, classNames) {
    if (Object.isElement(elements)) {
      elements = [elements];
    }

    if (Object.isString(classNames)) {
      classNames = classNames.split(' ');
    }

    var j, className;
    for (var i = 0, element; element = elements[i]; i++) {
      for (j = 0; className = classNames[j]; j++) {
        element.removeClassName(className);
      }
    }
  },

  FOCUSABLE_ELEMENTS: $w('input select textarea button object'),

  isFocusable: function(element) {
    var name = element.nodeName.toLowerCase(),
      tabIndex = element.readAttribute('tabIndex'),
      isFocusable = false;

    if (S2.UI.FOCUSABLE_ELEMENTS.include(name)) {
      isFocusable = !element.disabled;
    } else if ($w('a area').include(name)) {
      isFocusable = element.href || (tabIndex && !isNaN(tabIndex));
    } else {
      isFocusable = tabIndex && !isNaN(tabIndex);
    }
    return !!isFocusable && S2.UI.isVisible(element);
  },

  findFocusables: function(element) {
    return $(element).descendants().select(S2.UI.isFocusable);
  },

  isVisible: function(element) {
    element = $(element);
    var originalElement = element;

    while (element && element.parentNode) {
      var display = element.getStyle('display'),
       visibility = element.getStyle('visibility');

      if (display === 'none' || visibility === 'hidden') {
        return false;
      }
      element = $(element.parentNode);
    }
    return true;
  },

  makeVisible: function(elements, shouldBeVisible) {
    if (Object.isElement(elements)) {
      elements = [elements];
    }

    var newValue = shouldBeVisible ? "visible": "hidden";
    for (var i = 0, element; element = elements[i]; i++) {
      element.setStyle({ 'visibility': newValue });
    }

    return elements;
  },

  modifierUsed: function(event) {
    return event.metaKey || event.ctrlKey || event.altKey;
  }
});

(function() {
  var IGNORED_ELEMENTS = [];
  function _textSelectionHandler(event) {
    var element = Event.element(event);
    if (!element) return;
    for (var i = 0, node; node = IGNORED_ELEMENTS[i]; i++) {
      if (element === node || element.descendantOf(node)) {
        Event.stop(event);
        break;
      }
    }
  }

  if (document.attachEvent) {
    document.onselectstart = _textSelectionHandler.bindAsEventListener(window);
  } else {
    document.observe('mousedown', _textSelectionHandler);
  }

  Object.extend(S2.UI, {
    enableTextSelection: function(element) {
      element.setStyle({
        '-moz-user-select': '',
        '-webkit-user-select': ''
      });
      IGNORED_ELEMENTS = IGNORED_ELEMENTS.without(element);
      return element;
    },

    disableTextSelection: function(element) {
      element.setStyle({
        '-moz-user-select': 'none',
        '-webkit-user-select': 'none'
      });
      if (!IGNORED_ELEMENTS.include(element)) {
        IGNORED_ELEMENTS.push(element);
      }
      return element;
    }
  });
})();
S2.UI.Behavior = Class.create(S2.UI.Mixin.Configurable, {
  initialize: function(element, options) {
    this.element = element;
    this.setOptions(options);

    Object.extend(this, options);

    this._observers = {};

    function isEventHandler(eventName) {
      return eventName.startsWith('on') || eventName.include('/on');
    }

    var parts, element, name, handler;
    for (var eventName in this) {
      if (!isEventHandler(eventName)) continue;

      parts = eventName.split('/');
      if (parts.length === 2) {
        element = this[parts.first()] || this.element;
      } else {
        element = this.element;
      }
      name = parts.last();

      handler = this._observers[name] = this[eventName].bind(this);
      element.observe(name.substring(2), handler);
    }
  },

  destroy: function() {
    var element = this.options.proxy || this.element;
    var handler;
    for (var eventName in this._observers) {
      handler = this._observers[eventName];
      element.stopObserving(eventName.substring(2), handler);
    }
  }
});


Object.extend(S2.UI, {
  addBehavior: function(element, behaviorClass, options) {
    var self = arguments.callee;
    if (Object.isArray(element)) {
      element.each( function(el) { self(el, behaviorClass, options); });
      return;
    }

    if (Object.isArray(behaviorClass)) {
      behaviorClass.each( function(klass) { self(element, klass, options ); });
      return;
    }

    var instance = new behaviorClass(element, options || {});
    var behaviors = $(element).retrieve('ui.behaviors', []);
    behaviors.push(instance);
  },

  removeBehavior: function(element, behaviorClass) {
    var self = arguments.callee;
    if (Object.isArray(element)) {
      element.each( function(el) { self(el, behaviorClass); });
      return;
    }

    if (Object.isArray(behaviorClass)) {
      behaviorClass.each( function(klass) { self(element, klass); });
      return;
    }

    var behaviors = $(element).retrieve('ui.behaviors', []);
    var shouldBeRemoved = [];
    for (var i = 0, behavior; behavior = behaviors[i]; i++) {
      if (!behavior instanceof behaviorClass) continue;
      behavior.destroy();
      shouldBeRemoved.push(behavior);
    }
    $(element).store('ui.behaviors', behaviors.without(shouldBeRemoved));
  },


  getBehavior: function(element, behaviorClass) {
    element = $(element);

    var behaviors = element.retrieve('ui.behaviors', []);
    for (var i = 0, l = behaviors.length, b; i < l; i++) {
      b = behaviors[i];
      if (b.constructor === behaviorClass) return b;
    }

    return null;
  }
});

S2.UI.Behavior.Drag = Class.create(S2.UI.Behavior, {
  initialize: function($super, element, options) {
    this.__onmousemove = this._onmousemove.bind(this);
    $super(element, options);
    this.element.addClassName('ui-draggable');
  },

  destroy: function($super) {
    this.element.removeClassName('ui-draggable');
    $super();
  },

  "handle/onmousedown": function(event) {
    var element = this.element;
    this._startPointer  = event.pointer();
    this._startPosition = {
      left: window.parseInt(element.getStyle('left'), 10),
      top:  window.parseInt(element.getStyle('top'),  10)
    };
    document.observe('mousemove', this.__onmousemove);
  },

  "handle/onmouseup": function(event) {
    this._startPointer  = null;
    this._startPosition = null;
    document.stopObserving('mousemove', this.__onmousemove);
  },

  _onmousemove: function(event) {
    var pointer = event.pointer();

    if (!this._startPointer) return;

    var delta = {
      x: pointer.x - this._startPointer.x,
      y: pointer.y - this._startPointer.y
    };

    var newPosition = {
      left: (this._startPosition.left + delta.x) + 'px',
      top:  (this._startPosition.top  + delta.y) + 'px'
    };

    this.element.setStyle(newPosition);
  }
});
S2.UI.Behavior.Focus = Class.create(S2.UI.Behavior, {
  onfocus: function(event) {
    if (this.element.hasClassName('ui-state-disabled')) return;
    this.element.addClassName('ui-state-focus');
  },

  onblur: function(event) {
    if (this.element.hasClassName('ui-state-disabled')) return;
    this.element.removeClassName('ui-state-focus');
  }
});
S2.UI.Behavior.Hover = Class.create(S2.UI.Behavior, {
  onmouseenter: function(event) {
    if (this.element.hasClassName('ui-state-disabled')) return;
    this.element.addClassName('ui-state-hover');
  },

  onmouseleave: function(event) {
    if (this.element.hasClassName('ui-state-disabled')) return;
    this.element.removeClassName('ui-state-hover');
  }
});
S2.UI.Behavior.Resize = Class.create(S2.UI.Behavior, {
  initialize: function(element, options) {
  }
});
S2.UI.Behavior.Down = Class.create(S2.UI.Behavior, {
  onmousedown: function(event) {
    this._down = true;
    if (this.element.hasClassName('ui-state-disabled')) return;
    this.element.addClassName('ui-state-down');
  },

  onmouseup: function(event) {
    this._down = false;
    if (this.element.hasClassName('ui-state-disabled')) return;
    this.element.removeClassName('ui-state-down');
  },

  onmouseleave: function(event) {
    return this.onmouseup(event);
  },

  onmouseenter: function(event) {
    if (this._down) {
      return this.onmousedown(event);
    }
  }
});



(function(UI) {

  UI.Base = Class.create(UI.Mixin.Configurable, {
    NAME: "S2.UI.Base",

    addObservers:    Function.ABSTRACT,

    removeObservers: Function.ABSTRACT,

    destroy: function() {
      this.removeObservers();
    },

    toElement: function() {
      return this.element;
    },

    inspect: function() {
      return "#<#{NAME}>".interpolate(this);
    }
  });

})(S2.UI);

Object.extend(Event, {
  KEY_SPACE: 32
});

(function(UI) {

  UI.Accordion = Class.create(UI.Base, {
    NAME: "S2.UI.Accordion",

    initialize: function(element, options) {
      this.element = $(element);
      var opt = this.setOptions(options);

      UI.addClassNames(this.element, 'ui-accordion ui-widget ui-helper-reset');

      if (this.element.nodeName.toUpperCase() === "UL") {
        var lis = this.element.childElements().grep(new Selector('li'));
        UI.addClassNames(lis, 'ui-accordion-li-fix');
      }

      this.headers = this.element.select(opt.headerSelector);
      if (!this.headers || this.headers.length === 0) return;

      UI.addClassNames(this.headers, 'ui-accordion-header ui-helper-reset ' +
       'ui-state-default ui-corner-all');
      UI.addBehavior(this.headers, [UI.Behavior.Hover, UI.Behavior.Focus]);

      this.content = this.headers.map( function(h) { return h.next(); });

      UI.addClassNames(this.content, 'ui-accordion-content ui-helper-reset ' +
       'ui-widget-content ui-corner-bottom');

      this.headers.each( function(header) {
        var icon = new Element('span');
        UI.addClassNames(icon, 'ui-icon ' + opt.icons.header);
        header.insert({ top: icon });
      });

      this._markActive(opt.active || this.headers.first(), false);

      this.element.writeAttribute({
        'role': 'tablist',
        'aria-multiselectable': opt.multiple.toString()
      });
      this.headers.invoke('writeAttribute', 'role', 'tab');
      this.content.invoke('writeAttribute', 'role', 'tabpanel');

      var links = this.headers.map( function(h) { return h.down('a'); });
      links.invoke('observe', 'click', function(event) {
        event.preventDefault();
      });

      this.observers = {
        click: this.click.bind(this),
        keypress: this.keypress.bind(this)
      };

      this.addObservers();
    },

    addObservers: function() {
      this.headers.invoke('observe', 'click', this.observers.click);
      if (Prototype.Browser.WebKit) {
        this.headers.invoke('observe', 'keydown', this.observers.keypress);
      } else {
        this.headers.invoke('observe', 'keypress', this.observers.keypress);
      }
    },

    click: function(event) {
      var header = event.findElement(this.options.headerSelector);
      if (!header || !this.headers.include(header)) return;
      this._toggleActive(header);
    },

    keypress: function(event) {
      if (event.shiftKey || event.metaKey || event.altKey || event.ctrlKey) {
        return;
      }
      var header = event.findElement(this.options.headerSelector);
      var keyCode = (event.keyCode === 0) ? event.charCode : event.keyCode;
      switch (keyCode) {
      case Event.KEY_SPACE:
        this._toggleActive(header);
        event.stop();
        return;
      case Event.KEY_DOWN: // fallthrough
      case Event.KEY_RIGHT:
        this._focusHeader(header, 1);
        event.stop();
        return;
      case Event.KEY_UP: // fallthrough
      case Event.KEY_LEFT:
        this._focusHeader(header, -1);
        event.stop();
        return;
      case Event.KEY_HOME:
        this._focusHeader(this.headers.first());
        event.stop();
        return;
      case Event.KEY_END:
        this._focusHeader(this.headers.last());
        event.stop();
        return;
      }
    },

    _focusHeader: function(header, delta) {
      if (Object.isNumber(delta)) {
        var index = this.headers.indexOf(header);
        index = index + delta;
        if (index > (this.headers.length - 1)) {
          index = this.headers.length - 1;
        } else if (index < 0) {
          index = 0;
        }
        header = this.headers[index];
      }
      (function() { header.down('a').focus(); }).defer();
    },

    _toggleActive: function(header) {
      if (header.hasClassName('ui-state-active')) {
        if (!this.options.multiple) return;
        this._removeActive(header);
        this._activatePanel(null, header.next(), true);
      } else {
        this._markActive(header);
      }
    },

    _removeActive: function(active) {
      var opt = this.options;
      UI.removeClassNames(active, 'ui-state-active ui-corner-top');
      UI.addClassNames(active, 'ui-state-default ui-corner-all');
      active.writeAttribute('aria-expanded', 'false');

      var icon = active.down('.ui-icon');
      icon.removeClassName(opt.icons.headerSelected);
      icon.addClassName(opt.icons.header);
    },

    _markActive: function(active, shouldAnimate) {
      if (Object.isUndefined(shouldAnimate)) {
        shouldAnimate = true;
      }
      var opt = this.options;

      var activePanel = null;
      if (!opt.multiple) {
        activePanel = this.element.down('.ui-accordion-content-active');
        this.headers.each(this._removeActive.bind(this));
      }

      if (!active) return;

      UI.removeClassNames(active, 'ui-state-default ui-corner-all');
      UI.addClassNames(active, 'ui-state-active ui-corner-top');

      active.writeAttribute('aria-expanded', 'true');

      this._activatePanel(active.next(), activePanel, shouldAnimate);

      var icon = active.down('.ui-icon');
      icon.removeClassName(opt.icons.header);
      icon.addClassName(opt.icons.headerSelected);

      return active;
    },

    _activatePanel: function(panel, previousPanel, shouldAnimate) {
      if (shouldAnimate) {
        this.options.transition(panel, previousPanel);
      } else {
        if (previousPanel) {
          previousPanel.removeClassName('ui-accordion-content-active');
        }
        if (panel) {
          panel.addClassName('ui-accordion-content-active');
        }
      }
    }
  });

  Object.extend(UI.Accordion, {
    DEFAULT_OPTIONS: {
      multiple: false,  /* whether more than one pane can be open at once */
      headerSelector: 'h3',

      icons: {
        header:         'ui-icon-triangle-1-e',
        headerSelected: 'ui-icon-triangle-1-s'
      },

      transition: function(panel, previousPanel) {
        var effects = [], effect;

        if (previousPanel) {
          effect = new S2.FX.SlideUp(previousPanel, {
            duration: 0.2,
            after: function() {
              previousPanel.removeClassName('ui-accordion-content-active');
            }
          });
          effects.push(effect);
        }

        if (panel) {
          effect = new S2.FX.SlideDown(panel, {
            duration: 0.2,
            before: function() {
              panel.addClassName('ui-accordion-content-active');
            }
          });
          effects.push(effect);
        }

        effects.invoke('play');
      }
    }
  });

})(S2.UI);


(function(UI) {
  UI.Button = Class.create(UI.Base, {
    NAME: "S2.UI.Button",

    initialize: function(element, options) {
      this.element = $(element);
      this.element.store('ui.button', this);
      var opt = this.setOptions(options);

      UI.addClassNames(this.element, 'ui-state-default ui-corner-all');
      UI.addBehavior(this.element, [UI.Behavior.Hover, UI.Behavior.Focus,
       UI.Behavior.Down]);

      if (opt.primary) {
        this.element.addClassName('ui-priority-primary');
      }

      this.element.writeAttribute('role', 'button');

      this.enabled = true;
      var enabled = (this.element.disabled === true) ||
       !this.element.hasClassName('ui-state-disabled');

      this.setEnabled(enabled);
    },


    setEnabled: function(isEnabled) {
      if (this.enabled === isEnabled) return;
      this.enabled = isEnabled;
      if (isEnabled) {
        this.element.removeClassName('ui-state-disabled');
      } else {
        this.element.addClassName('ui-state-disabled');
      }
      this.element.disabled = !isEnabled;
    },

    toElement: function() {
      return this.element;
    },

    toHTML: function() {
      return this.element.toHTML();
    },

    toString: function() {
      return this.element.toHTML();
    },

    inspect: function() {
      return this.element.inspect();
    }
  });

  Object.extend(UI.Button, {
    DEFAULT_OPTIONS: {
      primary: false
    }
  });

})(S2.UI);

(function(UI) {
  UI.Tabs = Class.create(UI.Base, {
    NAME: "S2.UI.Tabs",

    initialize: function(element, options) {
      this.element = $(element);
      UI.addClassNames(this.element,
       'ui-widget ui-widget-content ui-tabs ui-corner-all');

      this.setOptions(options);
      var opt = this.options;

      this.anchors = [];
      this.panels  = [];

      this.list = this.element.down('ul');
      this.list.cleanWhitespace();
      this.nav  = this.list;
      UI.addClassNames(this.nav,
       'ui-tabs-nav ui-helper-reset ui-helper-clearfix ' +
       'ui-widget-header ui-corner-all');

      this.tabs = this.list.select('li');
      UI.addClassNames(this.tabs, 'ui-state-default ui-corner-top');
      UI.addBehavior(this.tabs, [UI.Behavior.Hover, UI.Behavior.Down]);

      this.element.writeAttribute({
        'role': 'tablist',
        'aria-multiselectable': 'false'
      });

      this.tabs.each( function(li) {
        var anchor = li.down('a');
        if (!anchor) return;

        var href = anchor.readAttribute('href');
        if (!href.include('#')) return;

        var hash = href.split('#').last(), panel = $(hash);

        li.writeAttribute('tabIndex', '0');

        if (panel) {
          panel.store('ui.tab', li);
          li.store('ui.panel', panel);

          this.anchors.push(anchor);
          this.panels.push(panel);
        }
      }, this);

      this.anchors.invoke('writeAttribute', 'role', 'tab');
      this.panels.invoke('writeAttribute', 'role', 'tabpanel');

      this.tabs.first().addClassName('ui-position-first');
      this.tabs.last().addClassName('ui-position-last');

      UI.addClassNames(this.panels,
       'ui-tabs-panel ui-tabs-hide ui-widget-content ui-corner-bottom');

      this.observers = {
        onKeyPress: this.onKeyPress.bind(this),
        onTabClick: this.onTabClick.bind(this)
      };
      this.addObservers();

      var selectedTab;

      var urlHash = window.location.hash.substring(1), activePanel;
      if (!urlHash.empty()) {
        activePanel = $(urlHash);
      }
      if (activePanel && this.panels.include(activePanel)) {
        selectedTab = activePanel.retrieve('ui.tab');
      } else {
        selectedTab = opt.selectedTab ? $(opt.selectedTab) :
         this.tabs.first();
      }

      this.setSelectedTab(selectedTab);
    },

    addObservers: function() {
      this.anchors.invoke('observe', 'click', this.observers.onTabClick);
      this.tabs.invoke('observe', 'keypress', this.observers.onKeyPress);
    },

    _setSelected: function(id) {
      var panel = $(id), tab = panel.retrieve('ui.tab');

      var oldTab = this.list.down('.ui-tabs-selected');
      var oldPanel = oldTab ? oldTab.retrieve('ui.panel') : null;

      UI.removeClassNames(this.tabs, 'ui-tabs-selected ui-state-active');
      UI.addClassNames(this.tabs, 'ui-state-default');

      tab.removeClassName('ui-state-default').addClassName(
       'ui-tabs-selected ui-state-active');

      this.element.fire('ui:tabs:change', {
        from: { tab: oldTab, panel: oldPanel },
        to:   { tab: tab,    panel: panel    }
      });
      this.options.panel.transition(oldPanel, panel);
    },

    setSelectedTab: function(tab) {
      this.setSelectedPanel(tab.retrieve('ui.panel'));
    },

    setSelectedPanel: function(panel) {
      this._setSelected(panel.readAttribute('id'));
    },

    onTabClick: function(event) {
      event.stop();
      var anchor = event.findElement('a'), tab = event.findElement('li');

      this.setSelectedTab(tab);
    },

    onKeyPress: function(event) {
      if (UI.modifierUsed(event)) return;
      var tab = event.findElement('li');
      var keyCode = event.keyCode || event.charCode;

      switch (keyCode) {
      case Event.KEY_SPACE:  // fallthrough
      case Event.KEY_RETURN:
        this.setSelectedTab(tab);
        event.stop();
        return;
      case Event.KEY_UP: // fallthrough
      case Event.KEY_LEFT:
        this._focusTab(tab, -1);
        return;
      case Event.KEY_DOWN: // fallthrough
      case Event.KEY_RIGHT:
        this._focusTab(tab, 1);
        return;
      }
    },

    _focusTab: function(tab, delta) {
      if (Object.isNumber(delta)) {
        var index = this.tabs.indexOf(tab);
        index = index + delta;
        if (index > (this.tabs.length - 1)) {
          index = this.tabs.length - 1;
        } else if (index < 0) {
          index = 0;
        }
        tab = this.tabs[index];
      }
      (function() { tab.focus(); }).defer();
    }
  });

  Object.extend(UI.Tabs, {
    DEFAULT_OPTIONS: {
      panel: {
        transition: function(from, to) {
          if (from) {
            from.addClassName('ui-tabs-hide');
          }
          to.removeClassName('ui-tabs-hide');
        }
      }
    }
  });
})(S2.UI);
(function(UI) {


  UI.Overlay = Class.create(
   UI.Base,
   UI.Mixin.Trackable,
   UI.Mixin.Shim, {
    NAME: "S2.UI.Overlay",

    initialize: function(options) {
      this.setOptions(options);
      this.element = new Element('div', {
        'class': 'ui-widget-overlay'
      });

      this.register();
      this.createShim();
      this.adjustShim();
      this.constructor.onResize();
    },

    destroy: function() {
      this.element.remove();
      this.unregister();
    },

    toElement: function() {
      return this.element;
    }
  });

  Object.extend(UI.Overlay, {
    onRegister: function() {
      if (this.instances.length !== 1) return;

      this._resizeObserver = this._resizeObserver || this.onResize.bind(this);
      Event.observe(window, 'resize', this._resizeObserver);
      Event.observe(window, 'scroll', this._resizeObserver);
	 
	  
    },

    onUnregister: function() {
      if (this.instances.length !== 0) return;
      Event.stopObserving(window, 'resize', this._resizeObserver);
      Event.stopObserving(window, 'scroll', this._resizeObserver);
	
    },

    onResize: function() {
      var vSize   = document.viewport.getDimensions();
      var offsets = document.viewport.getScrollOffsets();
      this.instances.each( function(instance) {
        var element = instance.element;
        element.setStyle({
          width:  vSize.width  + 'px',
          height: vSize.height + 'px',
          left:   offsets.left + 'px',
          top:    offsets.top  + 'px'
        });
      });
      (function() {
        this.instances.invoke('adjustShim');
      }).bind(this).defer();
    }
  });

})(S2.UI);
(function(UI) {

  UI.Dialog = Class.create(UI.Base, {
    NAME: "S2.UI.Dialog",

    initialize: function(element, options) {
      if (!Object.isElement(element)) {
        options = element;
        element = null;
      } else {
        element = $(element);
      }

      var opt = this.setOptions(options);

      this.element = element || new Element('div');
      UI.addClassNames(this.element, 'ui-dialog ui-widget ' +
       'ui-widget-content ui-corner-all');

      this.element.hide().setStyle({
        position: 'absolute',
        overflow: 'hidden',
        zIndex:   opt.zIndex,
        outline:  '0'
      });

      this.element.writeAttribute({
        tabIndex: '-1',
        role: 'dialog'
      });

      if (opt.content) {
        this.content = Object.isElement(opt.content) ? opt.content :
         new Element('div').update(opt.content);
      } else {
        this.content = new Element('div');
      }

      UI.addClassNames(this.content, 'ui-dialog-content ui-widget-content');
      this.element.insert(this.content);

      this.titleBar = this.options.titleBar || new Element('div');
      UI.addClassNames(this.titleBar, 'ui-dialog-titlebar ui-widget-header ' +
  		 'ui-corner-all ui-helper-clearfix');
  		this.element.insert({ top: this.titleBar });

  	  this.closeButton = new Element('a', { 'href': '#' });
  	  UI.addClassNames(this.closeButton, 'ui-dialog-titlebar-close ' +
  	   'ui-corner-all');
  	  new UI.Button(this.closeButton);
  	  this.closeButton.observe('mousedown', Event.stop);
  	  this.closeButton.observe('click', function(event) {
  	    event.stop();
  	    this.close(false);
  	  }.bind(this));

  	  this.titleBar.insert(this.closeButton);

  	  this.closeText = new Element('span');
  	  UI.addClassNames(this.closeText, 'ui-icon ui-icon-closethick');

  	  this.closeButton.insert(this.closeText);

  	  this.titleText = new Element('span', { 'class': 'ui-dialog-title' });
  	  this.titleText.update(this.options.title).identify();
  	  this.element.writeAttribute('aria-labelledby',
  	   this.titleText.readAttribute('id'));
  	  this.titleBar.insert({ top: this.titleText }) ;

      UI.disableTextSelection(this.element);

      if (this.options.draggable) {
        UI.addBehavior(this.element, UI.Behavior.Drag,
         { handle: this.titleBar });
      }


      var buttons = this.options.buttons;

      if (buttons && buttons.length) {
        this._createButtons();
      }

      this.observers = {
        keypress: this.keypress.bind(this)
      };

    },

    toElement: function() {
      return this.element;
    },

    _createButtons: function() {
      var buttons = this.options.buttons;
      if (this.buttonPane) {
        this.buttonPane.remove();
      }

      this.buttonPane = new Element('div');
      UI.addClassNames(this.buttonPane,
       'ui-dialog-buttonpane ui-widget-content ui-helper-clearfix');

      buttons.each( function(button) {
        var element = new Element('button', { type: 'button' });
        UI.addClassNames(element, 'ui-state-default ui-corner-all');

        if (button.primary) {
          element.addClassName('ui-priority-primary');
        }

        if (button.secondary) {
          element.addClassName('ui-priority-secondary');
        }

        element.update(button.label);
        new UI.Button(element);
        element.observe('click', button.action.bind(this, this));

        this.buttonPane.insert(element);
      }, this);

      this.element.insert(this.buttonPane);
    },

    _position: function() {
      var vSize = document.viewport.getDimensions();
      var dialog = this.element;
      var dimensions = {
        width: parseInt(dialog.getStyle('width'), 10),
        height: parseInt(dialog.getStyle('height'), 10)
      };
      var position = {
        left: ((vSize.width / 2) - (dimensions.width / 2)).round(),
        top: ((vSize.height / 2) - (dimensions.height / 2)).round()
      };

      var offsets = document.viewport.getScrollOffsets();

      position.left += offsets.left;
      position.top  += offsets.top;

      this.element.setStyle({
        left: position.left + 'px',
        top:  position.top  + 'px'
      });
    },

    open: function() {
      if (this._isOpen) return;

      var result = this.element.fire("ui:dialog:before:open",
       { dialog: this });
      if (result.stopped) return;

      var opt = this.options;

      this.overlay = opt.modal ? new UI.Overlay() : null;
      $(document.body).insert(this.overlay);
      $(document.body).insert(this.element);

      this.element.show();
      this._position();

      this.focusables = UI.findFocusables(this.element);

      if (!opt.submitForms) {
        var forms = this.content.select('form');
        forms.invoke('observe', 'submit', Event.stop);
      }

      var f = this.focusables.without(this.closeButton);
      var focus = opt.focus, foundFocusable = false;
      if (focus === 'first') {
        f.first().focus();
        foundFocusable = true;
      } else if (focus === 'last') {
        f.last().focus();
        foundFocusable = true;
      } else if (Object.isElement(focus)) {
        focus.focus();
        foundFocusable = true;
      } else {
        if (this.buttonPane) {
          var primary = this.buttonPane.down('.ui-priority-primary');
          if (primary) {
            primary.focus();
            foundFocusable = true;
          }
        }
      }

      if (!foundFocusable && f.length > 0) {
        f.first().focus();
      }

      Event.observe(window, 'keydown', this.observers.keypress);
      this._isOpen = true;

      this.element.fire("ui:dialog:after:open", { dialog: this });
      return this;
    },

    close: function(success) {
      success = !!success; // Coerce to a boolean.
      var result = this.element.fire("ui:dialog:before:close",
       { dialog: this });
      if (result.stopped) return;

      if (this.overlay) {
        this.overlay.destroy();
      }

      this.element.hide();
      this._isOpen = false;
      Event.stopObserving(window, 'keydown', this.observers.keypress);

      var memo = { dialog: this, success: success };

      var form = this.content.down('form');
      if (form) {
        Object.extend(memo, { form: form.serialize({ hash: true }) });
      }

      this.element.fire("ui:dialog:after:close", memo);
      UI.enableTextSelection(this.element, true);
      return this;
    },

    keypress: function(event) {
      if (UI.modifierUsed(event)) return;

      var f = this.focusables, opt = this.options;
      if (event.keyCode === Event.KEY_ESC) {
        if (opt.closeOnEscape) this.close(false);
        return;
      }

      if (event.keyCode === Event.KEY_RETURN) {
        this.close(true);
        return;
      }

      if (event.keyCode === Event.KEY_TAB) {
        if (!this.options.modal) return;
        if (!f) return;
        var next, current = event.findElement();
        var index = f.indexOf(current);
        if (index === -1) {
          next = f.first();
        } else {
          if (event.shiftKey) {
            next = index === 0 ? f.last() : f[index - 1];
          } else {
            next = (index === (f.length - 1)) ? f.first() : f[index + 1];
          }
        }

        if (next) {
          event.stop();
          (function() { next.focus(); }).defer();
        }
      }
    }
  });

  Object.extend(UI.Dialog, {
    DEFAULT_OPTIONS: {
      zIndex: 1000,

      title: "Dialog",

      content: null,
      modal:   true,
      focus:   'auto',

      submitForms: false,

      closeOnEscape: true,

      draggable: true,
      resizable: false,

      buttons: [
        {
          label: "OK",
          primary: true,
          action: function(instance) {
            instance.close(true);
          }
        }
      ]
    }
  });

})(S2.UI);


(function(UI) {
  UI.Slider = Class.create(UI.Base, {
    NAME: "S2.UI.Slider",

    initialize: function(element, options) {
      this.element = $(element);
      var opt = this.setOptions(options);

      UI.addClassNames(this.element, 'ui-slider ui-widget ' +
       'ui-widget-content ui-corner-all');

      this.orientation = opt.orientation;

      this.element.addClassName('ui-slider-' + this.orientation);

      this._computeTrackLength();

      var initialValues = opt.value.initial;
      if (!Object.isArray(initialValues)) {
        initialValues = [initialValues];
      }

      this.values  = initialValues;
      this.handles = [];
      this.values.each( function(value, index) {
        var handle = new Element('a', { href: '#' });
        handle.store('ui.slider.handle', index);
        this.handles.push(handle);
        this.element.insert(handle);
      }, this);

      UI.addClassNames(this.handles, 'ui-slider-handle ui-state-default ' +
       'ui-corner-all');
      this.handles.invoke('writeAttribute', 'tabIndex', '0');

      this.activeHandle = this.handles.first();

      this.handles.invoke('observe', 'click', Event.stop);
      UI.addBehavior(this.handles, [UI.Behavior.Hover, UI.Behavior.Focus]);

      this.observers = {
        focus:          this.focus.bind(this),
        blur:           this.blur.bind(this),
        keydown:        this.keydown.bind(this),
        keyup:          this.keyup.bind(this),
        mousedown:      this.mousedown.bind(this),
        mouseup:        this.mouseup.bind(this),
        mousemove:      this.mousemove.bind(this),
        rangeMouseDown: this.rangeMouseDown.bind(this),
        rangeMouseMove: this.rangeMouseMove.bind(this),
        rangeMouseUp:   this.rangeMouseUp.bind(this)
      };

      var v = opt.value;
      if (v.step !== null) {
        this._possibleValues = [];
        for (var val = v.min; val < v.max; val += v.step) {
          this._possibleValues.push(val);
        }
        this._possibleValues.push(v.max);

        this.keyboardStep = v.step;
      } else if (opt.possibleValues) {
        this._possibleValues = opt.possibleValues.clone();
        this.keyboardStep = null;
      } else {
        this.keyboardStep = (v.max - v.min) / 100;
      }

      this.range = null;
      if (opt.range && this.values.length === 2) {
        this.restricted = true;
        this.range = new Element('div', { 'class': 'ui-slider-range' });
        this.element.insert(this.range);

        this.range.addClassName('ui-widget-header');
      }

      this._computeTrackLength();
      this._computeHandleLength();

      this.active   = false;
      this.dragging = false;
      this.disabled = false;

      this.addObservers();

      this.values.each(this.setValue, this);

      this.initialized = true;
    },

    addObservers: function() {
      this.element.observe('mousedown', this.observers.mousedown);
      if (this.range) {
        this.range.observe('mousedown', this.observers.rangeMouseDown);
      }
      this.handles.invoke('observe', 'keydown', this.observers.keydown);
      this.handles.invoke('observe', 'keyup',   this.observers.keyup);
    },

    _computeTrackLength: function() {
      var length, dim;
      if (this.orientation === 'vertical') {
        dim = this.element.offsetHeight;
        length = (dim !== 0) ? dim :
         window.parseInt(this.element.getStyle('height'), 10);
      } else {
        dim = this.element.offsetWidth;
        length = (dim !== 0) ? dim :
         window.parseInt(this.element.getStyle('width'), 10);
      }

      this._trackLength = length;
      return length;
    },

    _computeHandleLength: function() {
      var handle = this.handles.first(), length, dim;

      if (!handle) return;

      if (this.orientation === 'vertical') {
        dim = handle.offsetHeight;
        length = (dim !== 0) ? dim :
         window.parseInt(handle.getStyle('height'), 10);
      } else {
        dim = handle.offsetWidth;
        length = (dim !== 0) ? dim :
         window.parseInt(handle.getStyle('width'), 10);
      }

      this._handleLength = length;
      return length;
    },

    _nextValue: function(currentValue, direction) {
      if (this.options.possibleValues) {
        var index = this._possibleValues.indexOf(currentValue);
        return this._possibleValues[index + direction];
      } else {
        return currentValue + (this.keyboardStep * direction);
      }
    },

    keydown: function(event) {
      if (this.options.disabled) return;

      var handle = event.findElement();
      var index  = handle.retrieve('ui.slider.handle');
      var allow = true, opt = this.options;

      if (!Object.isNumber(index)) return;

      var interceptKeys = [Event.KEY_HOME, Event.KEY_END, Event.KEY_UP,
       Event.KEY_DOWN, Event.KEY_LEFT, Event.KEY_RIGHT];

      if (!interceptKeys.include(event.keyCode)) {
        return;
      }

      handle.addClassName('ui-state-active');

      var currentValue, newValue, step = this.keyboardStep;
      currentValue = newValue = this.values[index];

      switch (event.keyCode) {
      case Event.KEY_HOME:
        newValue = opt.value.min; break;
      case Event.KEY_END:
        newValue = opt.value.max; break;
      case Event.KEY_UP: // fallthrough
      case Event.KEY_RIGHT:
        if (currentValue === opt.value.max) return;
        newValue = this._nextValue(currentValue, 1);
        break;
      case Event.KEY_DOWN: // fallthrough
      case Event.KEY_LEFT:
        if (currentValue === opt.value.min) return;
        newValue = this._nextValue(currentValue, -1);
        break;
      }

      this.dragging = true;
      this.setValue(newValue, index);

      if (!Prototype.Browser.WebKit) {
        var interval = this._timer ? 0.1 : 1;
        this._timer = arguments.callee.bind(this).delay(interval, event);
      }

      if (!allow) {
        event.stop();
      }
    },

    keyup: function(event) {
      this.dragging = false;
      if (this._timer) {
        window.clearTimeout(this._timer);
        this._timer = null;
      }
      this._updateFinished();

      var handle = event.findElement();
      handle.removeClassName('ui-state-active');
    },

    setValue: function(sliderValue, handleIndex) {
      if (!this.activeHandle) {
        this.activeHandle = this.handles[handleIndex || 0];
        this._updateStyles();
      }

      handleIndex = handleIndex ||
       this.activeHandle.retrieve('ui.slider.handle') || 0;

      if (this.initialized && this.restricted) {
        if (handleIndex > 0 && sliderValue < this.values[handleIndex - 1]) {
          sliderValue = this.values[handleIndex - 1];
        }
        if (handleIndex < (this.handles.length - 1) &&
         (sliderValue > this.values[handleIndex + 1])) {
          sliderValue = this.values[handleIndex + 1];
        }
      }

      sliderValue = this._getNearestValue(sliderValue);

      this.values[handleIndex] = sliderValue;

      var prop = (this.orientation === 'vertical') ? 'top' : 'left';
      var css = {};

      css[prop] = this._valueToPx(sliderValue) + 'px';
      this.handles[handleIndex].setStyle(css);

      this._drawRange();

      if (!this.dragging && !this.undoing && !this.initialized)  {
        this._updateFinished();
      }

      if (this.initialized) {
        this.element.fire("ui:slider:value:changing", {
          slider: this,
          values: this.values
        });
        this.options.onSlide(this.values, this);
      }

      return this;
    },

    _getNearestValue: function(value) {
      var range = this.options.value;

      if (value < range.min) value = range.min;
      if (value > range.max) value = range.max;

      if (this._possibleValues) {
        var left, right;
        for (var i = 0; i < this._possibleValues.length; i++) {
          right = this._possibleValues[i];
          if (right === value)  return value;
          if (right > value)    break;
        }
        left = this._possibleValues[i - 1];
        value = value.nearer(left, right);
      }

      return value;
    },

    _valueToPx: function(value) {
      var range = this.options.value;
      var pixels = (this._trackLength - (this._handleLength / 2)) /
       (range.max - range.min);
      pixels *= (value - range.min);

      if (this.orientation === 'vertical') {
        pixels = (this._trackLength - pixels) - this._handleLength;
      } else {
      }

      return Math.round(pixels);
    },

    mousedown: function(event) {
      var opt = this.options;
      if (!event.isLeftClick() || opt.disabled) return;
      event.stop();

      this._oldValues = this.values.clone();

      this.active = true;
      var target  = event.findElement();
      var pointer = event.pointer();

      if (target === this.element) {
        var trackOffset = this.element.cumulativeOffset();

        var newPosition = {
          x: Math.round((pointer.x - trackOffset.left) +
           (this._handleLength / 4)),
          y: Math.round((pointer.y - trackOffset.top) +
           (this._handleLength / 4))
        };

        this.setValue(this._pxToValue(newPosition));

        this.activeHandle = this.activeHandle || this.handles.first();
        handle = this.activeHandle;
        this._updateStyles();
      } else {
        handle = event.findElement('.ui-slider-handle');
        if (!handle) return;

        this.activeHandle = handle;
        this._updateStyles();
      }

      var handleOffset = handle.cumulativeOffset();

      this._offsets = {
        x: pointer.x - handleOffset.left,
        y: pointer.y - handleOffset.top
      };

      document.observe('mousemove', this.observers.mousemove);
      document.observe('mouseup',   this.observers.mouseup);
    },

    mouseup: function(event) {
      if (this.active && this.dragging) {
        this._updateFinished();
        event.stop();
      }

      this.active = this.dragging = false;

      this.activeHandle = null;
      this._updateStyles();

      document.stopObserving('mousemove', this.observers.mousemove);
      document.stopObserving('mouseup',   this.observers.mouseup);
    },


    mousemove: function(event) {
      if (!this.active) return;
      event.stop();

      this.dragging = true;
      this._draw(event);

      if (Prototype.Browser.WebKit) window.scrollBy(0, 0);
    },

    rangeMouseDown: function(event) {
      var pointer = event.pointer();

      var trackOffset = this.element.cumulativeOffset();

      var newPosition = {
        x: Math.round(pointer.x - trackOffset.left),
        y: Math.round(pointer.y - trackOffset.top)
      };

      this._rangeInitialValues = this.values.clone();
      this._rangePseudoValue = this._pxToValue(newPosition);

      document.observe('mousemove', this.observers.rangeMouseMove);
      document.observe('mouseup',   this.observers.rangeMouseUp);
    },

    rangeMouseMove: function(event) {
      this.dragging = true;
      event.stop();

      var opt = this.options;

      var pointer = event.pointer();
      var trackOffset = this.element.cumulativeOffset();

      var newPosition = {
        x: Math.round(pointer.x - trackOffset.left),
        y: Math.round(pointer.y - trackOffset.top)
      };

      var value = this._pxToValue(newPosition);
      var valueDelta = value - this._rangePseudoValue;
      var newValues = this._rangeInitialValues.map(
       function(v) { return v + valueDelta; });

      if (newValues[0] < opt.value.min) {
        valueDelta = opt.value.min - this._rangeInitialValues[0];
        newValues = this._rangeInitialValues.map(
         function(v) { return v + valueDelta; });
      } else if (newValues[1] > opt.value.max) {
        valueDelta = opt.value.max - this._rangeInitialValues[1];
        newValues = this._rangeInitialValues.map(
         function(v) { return v + valueDelta; });
      }

      newValues.each(this.setValue, this);
    },

    rangeMouseUp: function(event) {
      this.dragging = false;

      document.stopObserving('mousemove', this.observers.rangeMouseMove);
      document.stopObserving('mouseup',   this.observers.rangeMouseUp);

      this._updateFinished();
    },


    _draw: function(event) {
      var pointer = event.pointer();
      var trackOffset = this.element.cumulativeOffset();

      var newPosition = {
        x: Math.round((pointer.x - trackOffset.left) +
         (this._handleLength / 4)),
        y: Math.round((pointer.y - trackOffset.top) +
         (this._handleLength / 4))
      };

      pointer.x -= (this._offsets.x + trackOffset.left);
      pointer.y -= (this._offsets.y + trackOffset.top);


      this.setValue(this._pxToValue(pointer));
    },

    _pxToValue: function(offsets) {
      var opt = this.options;
      var offset = (this.orientation === 'horizontal') ?
       offsets.x : offsets.y;

      var value = ((offset / (this._trackLength - this._handleLength) *
       (opt.value.max - opt.value.min)) + opt.value.min);

      if (this.orientation === 'vertical') {
        value = opt.value.max - (value - opt.value.min);
      }

      return value;
    },

    undo: function() {
      if (!this._oldValues) return;
      this.values = this._oldValues.clone();

      this.undoing = true;
      this._oldValues.each(this.setValue, this);
      this.undoing = false;
    },

    _updateFinished: function() {
      var result = this.element.fire("ui:slider:value:changed", {
        slider: this,
        values: this.values
      });

      if (result.stopped) {
        this.undo();
        return;
      }

      this.activeHandle = null;
      this._updateStyles();

      this.options.onChange(this.values, this);
    },

    _updateStyles: function() {
      UI.removeClassNames(this.handles, 'ui-state-active');
      if (this.activeHandle) {
        this.activeHandle.addClassName('ui-state-active');
      }
    },

    _drawRange: function() {
      if (!this.range) return;
      var values = this.values, pixels = values.map(this._valueToPx, this);

      if (this.orientation === 'vertical') {
        this.range.setStyle({
          top: pixels[1] + 'px',
          height: (pixels[0] - pixels[1]) + 'px'
        });
      } else {
        this.range.setStyle({
          left:   pixels[0] + 'px',
          width:  (pixels[1] - pixels[0]) + 'px'
        });
      }
    },

    focus: function(event) {
      if (this.options.disabled) return;

      var handle = event.findElement();

      this.element.select('.ui-state-focus').invoke(
       'removeClassName', 'ui-state-focus');

      handle.addClassName('ui-state-focus');
    },

    blur: function(event) {
      event.findElement().removeClassName('ui-state-focus');
    }
  });

  Object.extend(UI.Slider, {
    DEFAULT_OPTIONS: {
      range: false,
      disabled: false,
      value: { min: 0, max: 100, initial: 0, step: null },
      possibleValues: null,
      orientation: 'horizontal',

      onSlide:  Prototype.emptyFunction,
      onChange: Prototype.emptyFunction
    }
  });
})(S2.UI);

(function(UI) {
  UI.ProgressBar = Class.create(UI.Base, {
    NAME: "S2.UI.ProgressBar",

    initialize: function(element, options) {
      this.element = $(element);
      var opt = this.setOptions(options);

      UI.addClassNames(this.element, 'ui-progressbar ui-widget ' +
       'ui-widget-content ui-corner-all');

      this.element.writeAttribute({
        'role': 'progressbar',
        'aria-valuemin': 0,
        'aria-valuemax': 100,
        'aria-valuenow': 0
      });

      this.valueElement = new Element('div', {
        'class': 'ui-progressbar-value ui-widget-header ui-corner-left'
      });

      this.value = opt.value.initial;
      this._refreshValue();

      this.element.insert(this.valueElement);
      this.element.store(this.NAME, this);
    },

    destroy: function() {
      UI.removeClassNames(this.element, 'ui-progressbar ui-widget ' +
       'ui-widget-content ui-corner-all');
      UI.removeAttributes(this.element, 'role aria-valuemin aria-valuemax ' +
       'aria-valuenow');
      this.element.getData().unset(this.NAME);
    },

    getValue: function() {
      var value = this.value, v = this.options.value;
      if (value < v.min) value = v.min;
      if (value > v.max) value = v.max;
      return value;
    },

    setValue: function(value) {
      this._oldValue = this.getValue();
      this.value = value;
      this._refreshValue();
      return this;
    },

    undo: function() {
      this.undoing = true;
      this.setValue(this._oldValue);
      this.undoing = false;
      return this;
    },

    _refreshValue: function() {
      var value = this.getValue();
      if (!this.undoing) {
        var result = this.element.fire('ui:progressbar:value:changed', {
          progressBar: this,
          value: value
        });
        if (result.stopped) {
          this.undo();
          return;
        }
      }
      if (value === this.options.value.max) {
        this.valueElement.addClassName('ui-corner-right');
      } else {
        this.valueElement.removeClassName('ui-corner-right');
      }


      var width    = window.parseInt(this.element.getStyle('width'), 10);
      var newWidth = (width * value) / 100;
      var css      = "width: #{0}px".interpolate([newWidth]);

      UI.makeVisible(this.valueElement, (value > this.options.value.min));
      this.valueElement.morph(css, { duration: 0.7, transition: 'linear' });
      this.element.writeAttribute('aria-valuenow', value);
    }
  });

  Object.extend(UI.ProgressBar, {
    DEFAULT_OPTIONS: {
      value: { min: 0, max: 100, initial: 0 }
    }
  });

})(S2.UI);

(function(UI) {
  UI.Menu = Class.create(UI.Base, UI.Mixin.Shim, {
    NAME: "S2.UI.Menu",

    initialize: function(element, options) {
      this.element = $(element);
      if (!this.element) {
        var options = element;
        this.element = new Element('ul', { 'class': 'ui-helper-hidden' });
      }

      this.activeId = this.element.identify() + '_active';
      var opt = this.setOptions();

      UI.addClassNames(this.element, 'ui-widget ui-widget-content ' +
       'ui-menu ui-corner-' + opt.corner);

      this.choices = this.element.select('li');

      this._highlightedIndex = -1;

      this.element.writeAttribute({
        'role': 'menu',
        'aria-activedescendant': this.activeId
      });

      this.choices.invoke('writeAttribute', 'role', 'menuitem');

      this.observers = {
        mouseover: this._mouseover.bind(this),
        click: this._click.bind(this)
      };
      this.addObservers();

      this._shown = false;

      this.createShim();

    },

    addObservers: function() {
      this.element.observe('mouseover', this.observers.mouseover);
      this.element.observe('mousedown', this.observers.click);
    },

    removeObservers: function() {
      this.element.stopObserving('mouseover', this.observers.mouseover);
      this.element.stopObserving('mousedown', this.observers.click);
    },

    clear: function() {
      this.element.select('li').invoke('remove');
      this.choices = [];
      return this;
    },

    addChoice: function(choice) {
      var li;
      if (Object.isElement(choice)) {
        if (choice.tagName.toUpperCase() === 'LI') {
          li = choice;
        } else {
          li = new Element('li');
          li.insert(choice);
        }
      } else {
        li = new Element('li');
        li.update(choice);
      }

      li.addClassName('ui-menu-item');
      li.writeAttribute('role', 'menuitem');

      this.element.insert(li);
      this.choices = this.element.select('li');

      return li;
    },

    _mouseover: function(event) {
      var li = event.findElement('li');
      if (!li) return;

      this.highlightChoice(li);
    },

    _click: function(event) {
      var li = event.findElement('li');
      if (!li) return;

      this.selectChoice(li);
    },

    moveHighlight: function(delta) {
      this._highlightedIndex = (this._highlightedIndex + delta).constrain(
       -1, this.choices.length - 1);

      this.highlightChoice();
      return this;
    },

    highlightChoice: function(element) {
      var choices = this.choices, index;

      if (Object.isElement(element)) {
        index = choices.indexOf(element);
      } else if (Object.isNumber(element)) {
        index = element;
      } else {
        index = this._highlightedIndex;
      }

      UI.removeClassNames(this.choices, 'ui-state-active');
      if (index === -1) return;
      this.choices[index].addClassName('ui-state-active');
      this._highlightedIndex = index;

      var active = this.element.down('#' + this.activeId);
      if (active) active.writeAttribute('id', '');
      this.choices[index].writeAttribute('id', this.activeId);
    },

    selectChoice: function(element) {
      var element;
      if (Object.isNumber(element)) {
        element = this.choices[element];
      } else if (!element) {
        element = this.choices[this._highlightedIndex];
      }

      var result = this.element.fire('ui:menu:selected', {
        instance: this,
        element: element
      });

      if (!result.stopped) {
        this.close();
      }

      return this;
    },

    open: function() {

      var result = this.element.fire('ui:menu:opened', { instance: this });
        this.element.removeClassName('ui-helper-hidden');
        this._highlightedIndex = -1;

      if (Prototype.Browser.IE) {
        this.adjustShim();
      }
    },

    close: function() {
      var result = this.element.fire('ui:menu:closed', { instance: this });
        this.element.addClassName('ui-helper-hidden');
      return this;
    },

    isOpen: function() {
      return !this.element.hasClassName('ui-helper-hidden');
    }
  });

  Object.extend(UI.Menu, {
    DEFAULT_OPTIONS: {
      corner: 'all'
    }
  });

})(S2.UI);


(function(UI) {

  UI.Autocompleter = Class.create(UI.Base, {
    NAME: "S2.UI.Autocompleter",

    initialize: function(element, options) {
      this.element = $(element);
      var opt = this.setOptions(options);

      UI.addClassNames(this.element, 'ui-widget ui-autocompleter');

      this.input = this.element.down('input[type="text"]');

      if (!this.input) {
        this.input = new Element('input', { type: 'text' });
        this.element.insert(this.input);
      }

      this.input.insert({ before: this.button });
      this.input.setAttribute('autocomplete', 'off');

      this.name = opt.parameterName || this.input.readAttribute('name');

      if (opt.choices) {
        this.choices = opt.choices.clone();
      }

      this.menu = new UI.Menu();
      this.element.insert(this.menu.element);

      (function() {
        var iLayout = this.input.getLayout();
        this.menu.element.setStyle({
          left: iLayout.get('left') + 'px',
          top:  (iLayout.get('top') + iLayout.get('margin-box-height')) + 'px'
        });
      }).bind(this).defer();

      this.observers = {
        blur: this._blur.bind(this),
        keyup: this._keyup.bind(this),
        keydown: this._keydown.bind(this),
        selected: this._selected.bind(this)
      };

      this.addObservers();
    },

    addObservers: function() {
      this.input.observe('blur',    this.observers.blur);
      this.input.observe('keyup',   this.observers.keyup);
      this.input.observe('keydown', this.observers.keydown);

      this.menu.element.observe('ui:menu:selected',
       this.observers.selected);
    },

    _schedule: function() {
      this._unschedule();
      this._timeout = this._change.bind(this).delay(this.options.frequency);
    },

    _unschedule: function() {
      if (this._timeout) window.clearTimeout(this._timeout);
    },

    _keyup: function(event) {
      var value = this.input.getValue();

      if (value) {
        if (value.blank() || value.length < this.options.minCharacters) {
          this.menu.close();
          this._unschedule();
          return;
        }
        if (value !== this._value) {
          this._schedule();
        }
      } else {
        this.menu.close();
        this._unschedule();
      }

      this._value = value;
    },

    _keydown: function(event) {
      if (UI.modifierUsed(event)) return;
      if (!this.menu.isOpen()) return;

      var keyCode = event.keyCode || event.charCode;

      switch (event.keyCode) {
        case Event.KEY_UP:
          this.menu.moveHighlight(-1);
          event.stop();
          break;
        case Event.KEY_DOWN:
          this.menu.moveHighlight(1);
          event.stop();
          break;
        case Event.KEY_TAB:
          this.menu.selectChoice();
          break;
        case Event.KEY_RETURN:
          this.menu.selectChoice();
          this.input.blur();
          event.stop();
          break;
        case Event.KEY_ESC:
          this.input.setValue('');
          this.input.blur();
          break;
      }
    },

    _getInput: function() {
      return this.input.getValue();
    },

    _setInput: function(value) {
      this.input.setValue(value);
    },

    _change: function() {
      this.findChoices();
    },

    findChoices: function() {
      var value = this._getInput();
      var choices = this.choices || [];
      var results = choices.inject([], function(memo, choice) {
        if (choice.toLowerCase().include(value.toLowerCase())) {
          memo.push(choice);
        }
        return memo;
      });

      this.setChoices(results);
    },

    setChoices: function(results) {
      this.results = results;
      this._updateMenu(results);
    },

    _updateMenu: function(results) {
      var opt = this.options;

      this.menu.clear();

      var needle = new RegExp(RegExp.escape(this._value), 'i');
      for (var i = 0, result, li, text; result = results[i]; i++) {
        text = opt.highlightSubstring ?
         result.replace(needle, "<b>$&</b>") :
         text;

        li = new Element('li').update(text);
        li.store('ui.autocompleter.value', result);
        this.menu.addChoice(li);
      }

      if (results.length === 0) {
        this.menu.close();
      } else {
        this.menu.open();
      }
    },

    _moveMenuChoice: function(delta) {
      var choices = this.list.down('li');
      this._selectedIndex = (this._selectedIndex + delta).constrain(
       -1, this.results.length - 1);

      this._highlightMenuChoice();
    },

    _highlightMenuChoice: function(element) {
      var choices = this.list.select('li'), index;

      if (Object.isElement(element)) {
        index = choices.indexOf(element);
      } else if (Object.isNumber(element)) {
        index = element;
      } else {
        index = this._selectedIndex;
      }

      UI.removeClassNames(choices, 'ui-state-active');
      if (index === -1 || index === null) return;
      choices[index].addClassName('ui-state-active');

      this._selectedIndex = index;
    },

    _selected: function(event) {
      var memo = event.memo, li = memo.element;
      if(li) this._setInput(li.retrieve('ui.autocompleter.value'));
      this.menu.close();
    },

    _blur: function(event) {
      this._unschedule();
      this.menu.close();
    }
  });

  Object.extend(UI.Autocompleter, {
    DEFAULT_OPTIONS: {
      tokens: [],
      frequency: 0.4,
      minCharacters: 1,

      highlightSubstring: true,

      onShow: Prototype.K,
      onHide: Prototype.K
    }
  });

})(S2.UI);


document.observe('dom:loaded',function(){
  if(!S2.enableMultitouchSupport) return;

  var b = $(document.body), sequenceId = 0;

  function initElementData(element){
    element._rotation = element._rotation || 0;
    element._scale = element._scale || 1;
    element._panX = element._panX || 0;
    element._panY = element._panY || 0;
    element._pans = [[0,0],[0,0],[0,0]];
    element._panidx = 1;
  }

  function setElementData(element, rotation, scale, panX, panY){
    element._rotation = rotation;
    element._scale = scale;
    element._panX = panX;
    element._panY = panY;
  }

  function fireEvent(element, data){
    element.fire('manipulate:update',
      Object.extend(data, { id: sequenceId }));
  }

  function setupIPhoneEvent(){
    var element, rotation, scale,
      touches = {}, t1 = null, t2 = null, state = 0, oX, oY,
      offsetX, offsetY, initialDistance, initialRotation;
    function updateTouches(touchlist){
      var i = touchlist.length;
      while(i--) touches[touchlist[i].identifier] = touchlist[i];
      var l = []; for(k in touches) l.push(k); l = l.sort();
      t1 = l.length > 0 ? l[0] : null;
      element = t1 ? touches[t1].target : null;
      if(element && element.nodeType==3) element = element.parentNode;
      t2 = l.length > 1 ? l[1] : null;
      if(state==0 && (t1&&t2)) {
        offsetX = (touches[t1].pageX-touches[t2].pageX).abs();
        offsetY = (touches[t1].pageY-touches[t2].pageY).abs();
        if(element) initElementData(element);
        initialDistance = Math.sqrt(offsetX*offsetX + offsetY*offsetY);
        initialRotation = Math.atan2(touches[t2].pageY-touches[t1].pageY,touches[t2].pageX-touches[t1].pageX);
        state = 1;
        return;
      }
      if(state==1 && !(t1&&t2)) {
        if(element) setElementData(element, rotation, scale);
        state = 0;
      }
    }
    function touchCount(){
      var c=0; for(k in touches) c++; return c;
    }

    b.observe('touchstart', function(event){
      var t = t1, o;
      updateTouches(event.changedTouches);
      if(t==null && t1) {
        o = element.viewportOffset();
        oX = o.left+(touches[t1].pageX-o.left), oY = o.top+(touches[t1].pageY-o.top);
      }
      event.stop();
    });
    b.observe('touchmove', function(event){
      updateTouches(event.changedTouches);
      if(t1&&!t2) {
        fireEvent(element, {
          panX: (element._panX||0)+touches[t1].pageX-oX,
          panY: (element._panY||0)+touches[t1].pageY-oY,
          scale: element._scale,
          rotation: element._rotation
        });
        event.stop();
        return;
      }
      if(!(t1&&t2)) return;
      var a = touches[t2].pageX-touches[t1].pageX,
        b = touches[t2].pageY-touches[t1].pageY,
        cX = (element._panX||0) + touches[t2].pageX - a/2 - oX,
        cY = (element._panY||0) + touches[t2].pageY - b/2 - oY,
        distance = Math.sqrt(a*a + b*b);

      scale = element._scale * distance/initialDistance;
      rotation = element._rotation + Math.atan2(b,a) - initialRotation;

      fireEvent(element, { rotation: rotation, scale: scale, panX: cX, panY: cY });
      event.stop();
    });
    ['touchcancel','touchend'].each(function(eventName){
      b.observe(eventName, function(event){
        var i = event.changedTouches.length;
        while(i--) delete(touches[event.changedTouches[i].identifier]);
        updateTouches([]);
        if(element) setElementData(element, rotation, scale);
      });
    });
  }

  function setupBridgedEvent(){
    var element, rotation, scale, panX, panY, active = false;
    b.observe('manipulatestart', function(event){

      event.stop();

      element = event.element();
      initElementData(element);
      active = true;
    });
    b.observe('manipulatemove', function(event){
      element = event.element();
      rotation = element._rotation + event.rotation;
      scale = element._scale * event.scale;
      panX = element._panX + event.panX;
      panY = element._panY + event.panY;

      fireEvent(element, {
        rotation: rotation, scale: scale,
        panX: panX, panY: panY,
        clientX: event.clientX, clientY: event.clientY
      });
      event.stop();
    }, false);
    b.observe('manipulateend', function(event){
      element = event.element();
      if(element) setElementData(element, rotation, scale, panX, panY);
      active = false;

      var speed = Math.sqrt(event.panSpeedX*event.panSpeedX +
          event.panSpeedY*event.panSpeedY);

      if(speed>25){
        element.fire('manipulate:flick', {
          speed: speed,
          direction: Math.atan2(event.panSpeedY,event.panSpeedX)
        });
      }
    });
    b.observe('mousemove', function(event){
      event.stop();
    });
    b.observe('mousedown', function(event){
      event.stop();
    });
    b.observe('mouseup', function(event){
      event.stop();
    });
  }

  function setupGenericEvent(){
    var mX, mY, active = false, listen = true, element, mode,
      initialDistance, initialRotation, oX, oY, rotation, scale, distance;
    function objectForScaleEvent(event){
      var o = element.viewportOffset(),
        a = (event.pageX-o.left)-mX,
        b = (event.pageY-o.top)-mY;
      distance = Math.sqrt(a*a + b*b);
      scale = element._scale * distance/initialDistance;
      rotation = element._rotation + Math.atan2(b,a) - initialRotation;
      return {
        rotation: rotation, scale: scale,
        panX: element._panX, panY: element._panY };
    }
    function objectForPanEvent(event){
      return {
        rotation: element._rotation, scale: element._scale,
        panX: element._panX+event.pageX-oX, panY: element._panY+event.pageY-oY };
    }
    b.observe('mousedown', function(event){
      mode = event.shiftKey ? 'scale' : 'pan';
      element = event.element();
      if(!(element && element.fire)) return;
      sequenceId++;
      active = true;
      initElementData(element);
      var o =  element.viewportOffset();
      mX = element.offsetWidth/2;
      mY = element.offsetHeight/2;
      var a = event.pageX-o.left-mX, b = event.pageY-o.top-mY;
      initialDistance = Math.sqrt(a*a+b*b);
      initialRotation = Math.atan2(b,a);
      oX = o.left+(event.pageX-o.left), oY = o.top+(event.pageY-o.top);
      event.stop();
    });
    b.observe('mousemove', function(event){
      if(!active) return;
      fireEvent(element, mode == 'scale' ? objectForScaleEvent(event) : objectForPanEvent(event));
    });
    b.observe('mouseup', function(event){
      if(!active) return;
      active = false;
      if(mode=='scale'){
        var o = objectForScaleEvent(event);
        fireEvent(element, o);
        element._rotation = o.rotation;
        element._scale = o.scale;
      } else {
        fireEvent(element, objectForPanEvent(event));
        element._panX = element._panX+event.pageX-oX;
        element._panY = element._panY+event.pageY-oY;
      }
    });
    b.observe('dragstart', function(event){ event.stop(); });
  }

  if(navigator.userAgent.match(/SLBrowser/))
    return setupBridgedEvent();

  if(navigator.userAgent.match(/QtLauncher/))
    return setupBridgedEvent();

  if(navigator.userAgent.match(/Starlight/))
    return setupBridgedEvent();

  try {
    document.createEvent("ManipulateEvent");
    return setupBridgedEvent();
  } catch(e) {}

  try {
    document.createEvent("TouchEvent");
    return setupIPhoneEvent();
  } catch(e) {}

  return setupGenericEvent();
});

Element.__scrollTo = Element.scrollTo;
Element.addMethods({
  scrollTo: function(element, to, options){
    if(arguments.length == 1) return Element.__scrollTo(element);
    new S2.FX.Scroll(element, Object.extend(options || {}, { to: to })).play();
    return element;
  }
});

Element.addMethods({
  effect: function(element, effect, options){
    if (Object.isFunction(effect))
      effect = new effect(element, options);
    else if (Object.isString(effect))
      effect = new S2.FX[effect.capitalize()](element, options);
    effect.play(element, options);
    return element;
  },

  morph: function(element, style, options){
    options = S2.FX.parseOptions(options);
    if(!options.queue){
      options.queue = element.retrieve('S2.FX.Queue');
      if(!options.queue)
        element.store('S2.FX.Queue', options.queue = new S2.FX.Queue());
    }
    if(!options.position) options.position = 'end';
    return element.effect('morph', Object.extend(options, {style: style}));
  }.optionize(),

  appear: function(element, options){
    return element.effect('morph', Object.extend({
      before: function(){ element.show().setStyle({opacity: 0}); },
      style:  'opacity:1'
    }, options));
  },

  fade: function(element, options){
    return element.effect('morph', Object.extend({
      style: 'opacity:0',
      after: element.hide.bind(element)
    }, options));
  },

  cloneWithoutIDs: function(element) {
    element = $(element);
    var clone = element.cloneNode(true);
    clone.id = '';
    $(clone).select('*[id]').each(function(e) { e.id = ''; });
    return clone;
  }
});

(function(){
  var transform;

  if(window.CSSMatrix) transform = function(element, transform){
    element.style.transform = 'scale('+(transform.scale||1)+') rotate('+(transform.rotation||0)+'rad)';
    return element;
  };
  else if(window.WebKitCSSMatrix) transform = function(element, transform){
    element.style.webkitTransform = 'scale('+(transform.scale||1)+') rotate('+(transform.rotation||0)+'rad)';
    return element;
  };
  else if(Prototype.Browser.Gecko) transform = function(element, transform){
    element.style.MozTransform = 'scale('+(transform.scale||1)+') rotate('+(transform.rotation||0)+'rad)';
    return element;
  };
  else if(Prototype.Browser.IE) transform = function(element, transform){
    if(!element._oDims)
      element._oDims = [element.offsetWidth, element.offsetHeight];
    var c = Math.cos(transform.rotation||0) * 1, s = Math.sin(transform.rotation||0) * 1,
        filter = "progid:DXImageTransform.Microsoft.Matrix(sizingMethod='auto expand',M11="+c+",M12="+(-s)+",M21="+s+",M22="+c+")";
    element.style.filter = filter;
    element.style.marginLeft = (element._oDims[0]-element.offsetWidth)/2+'px';
    element.style.marginTop = (element._oDims[1]-element.offsetHeight)/2+'px';
    return element;
  };
  else transform = function(element){ return element; }

  Element.addMethods({ transform: transform });
})();


S2.viewportOverlay = function(){
  var viewport = document.viewport.getDimensions(),
    offsets = document.viewport.getScrollOffsets();
  return new Element('div').setStyle({
    position: 'absolute',
    left: offsets.left + 'px', top: offsets.top + 'px',
    width: viewport.width + 'px', height: viewport.height + 'px'
  });
};
S2.FX.Helpers = {
  fitIntoRectangle: function(w, h, rw, rh){
    var f = w/h, rf = rw/rh; return f < rf ?
      [(rw - (w*(rh/h)))/2, 0, w*(rh/h), rh] :
      [0, (rh - (h*(rw/w)))/2, rw, h*(rw/w)];
  }
};

S2.FX.Operators.Zoom = Class.create(S2.FX.Operators.Style, {
  initialize: function($super, effect, object, options) {
    var viewport = document.viewport.getDimensions(),
      offsets = document.viewport.getScrollOffsets(),
      dims = object.getDimensions(),
      f = S2.FX.Helpers.fitIntoRectangle(dims.width, dims.height,
      viewport.width - (options.borderWidth || 0)*2,
      viewport.height - (options.borderWidth || 0)*2);

    Object.extend(options, { style: {
      left: f[0] + (options.borderWidth || 0) + offsets.left + 'px',
      top: f[1] + (options.borderWidth || 0) + offsets.top + 'px',
      width: f[2] + 'px', height: f[3] + 'px'
    }});
    $super(effect, object, options);
  }
});

S2.FX.Zoom = Class.create(S2.FX.Element, {
  setup: function() {
    this.clone = this.element.cloneWithoutIDs();
    this.element.insert({before:this.clone});
    this.clone.absolutize().setStyle({zIndex:9999});

    this.overlay = S2.viewportOverlay();
    if (this.options.overlayClassName)
      this.overlay.addClassName(this.options.overlayClassName)
    else
      this.overlay.setStyle({backgroundColor: '#000', opacity: '0.9'});
    $$('body')[0].insert(this.overlay);

    this.animate('zoom', this.clone, {
      borderWidth: this.options.borderWidth,
      propertyTransitions: this.options.propertyTransitions || { }
    });
  },
  teardown: function() {
    this.clone.observe('click', function() {
      this.overlay.remove();
      this.clone.morph('opacity:0', {
        duration: 0.2,
        after: function() {
          this.clone.remove();
        }.bind(this)
      })
    }.bind(this));
  }
});

/* SWFObject v2.1 <http://code.google.com/p/swfobject/>
	Copyright (c) 2007-2008 Geoff Stearns, Michael Williams, and Bobby van der Sluis
	This software is released under the MIT License <http://www.opensource.org/licenses/mit-license.php>
*/
var swfobject=function(){var b="undefined",Q="object",n="Shockwave Flash",p="ShockwaveFlash.ShockwaveFlash",P="application/x-shockwave-flash",m="SWFObjectExprInst",j=window,K=document,T=navigator,o=[],N=[],i=[],d=[],J,Z=null,M=null,l=null,e=false,A=false;var h=function(){var v=typeof K.getElementById!=b&&typeof K.getElementsByTagName!=b&&typeof K.createElement!=b,AC=[0,0,0],x=null;if(typeof T.plugins!=b&&typeof T.plugins[n]==Q){x=T.plugins[n].description;if(x&&!(typeof T.mimeTypes!=b&&T.mimeTypes[P]&&!T.mimeTypes[P].enabledPlugin)){x=x.replace(/^.*\s+(\S+\s+\S+$)/,"$1");AC[0]=parseInt(x.replace(/^(.*)\..*$/,"$1"),10);AC[1]=parseInt(x.replace(/^.*\.(.*)\s.*$/,"$1"),10);AC[2]=/r/.test(x)?parseInt(x.replace(/^.*r(.*)$/,"$1"),10):0}}else{if(typeof j.ActiveXObject!=b){var y=null,AB=false;try{y=new ActiveXObject(p+".7")}catch(t){try{y=new ActiveXObject(p+".6");AC=[6,0,21];y.AllowScriptAccess="always"}catch(t){if(AC[0]==6){AB=true}}if(!AB){try{y=new 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t=a("div");x+="SWFObjectNew";t.setAttribute("id",x);u.parentNode.insertBefore(t,u);u.style.display="none";var v=function(){u.parentNode.removeChild(u)};I(j,"onload",v)}U({data:w.expressInstall,id:m,width:w.width,height:w.height},{flashvars:r},x)}}function O(t){if(h.ie&&h.win&&t.readyState!=4){var r=a("div");t.parentNode.insertBefore(r,t);r.parentNode.replaceChild(G(t),r);t.style.display="none";var q=function(){t.parentNode.removeChild(t)};I(j,"onload",q)}else{t.parentNode.replaceChild(G(t),t)}}function G(v){var u=a("div");if(h.win&&h.ie){u.innerHTML=v.innerHTML}else{var r=v.getElementsByTagName(Q)[0];if(r){var w=r.childNodes;if(w){var q=w.length;for(var t=0;t<q;t++){if(!(w[t].nodeType==1&&w[t].nodeName=="PARAM")&&!(w[t].nodeType==8)){u.appendChild(w[t].cloneNode(true))}}}}}return u}function U(AG,AE,t){var q,v=C(t);if(v){if(typeof AG.id==b){AG.id=t}if(h.ie&&h.win){var AF="";for(var AB in 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r=h.pv,q=t.split(".");q[0]=parseInt(q[0],10);q[1]=parseInt(q[1],10)||0;q[2]=parseInt(q[2],10)||0;return(r[0]>q[0]||(r[0]==q[0]&&r[1]>q[1])||(r[0]==q[0]&&r[1]==q[1]&&r[2]>=q[2]))?true:false}function V(v,r){if(h.ie&&h.mac){return }var u=K.getElementsByTagName("head")[0],t=a("style");t.setAttribute("type","text/css");t.setAttribute("media","screen");if(!(h.ie&&h.win)&&typeof K.createTextNode!=b){t.appendChild(K.createTextNode(v+" {"+r+"}"))}u.appendChild(t);if(h.ie&&h.win&&typeof K.styleSheets!=b&&K.styleSheets.length>0){var q=K.styleSheets[K.styleSheets.length-1];if(typeof q.addRule==Q){q.addRule(v,r)}}}function W(t,q){var r=q?"visible":"hidden";if(e&&C(t)){C(t).style.visibility=r}else{V("#"+t,"visibility:"+r)}}function g(s){var r=/[\\\"<>\.;]/;var q=r.exec(s)!=null;return q?encodeURIComponent(s):s}var D=function(){if(h.ie&&h.win){window.attachEvent("onunload",function(){var w=d.length;for(var v=0;v<w;v++){d[v][0].detachEvent(d[v][1],d[v][2])}var t=i.length;for(var u=0;u<t;u++){X(i[u])}for(var r in h){h[r]=null}h=null;for(var q in swfobject){swfobject[q]=null}swfobject=null})}}();return{registerObject:function(u,q,t){if(!h.w3cdom||!u||!q){return }var r={};r.id=u;r.swfVersion=q;r.expressInstall=t?t:false;N[N.length]=r;W(u,false)},getObjectById:function(v){var q=null;if(h.w3cdom){var t=C(v);if(t){var u=t.getElementsByTagName(Q)[0];if(!u||(u&&typeof t.SetVariable!=b)){q=t}else{if(typeof u.SetVariable!=b){q=u}}}}return q},embedSWF:function(x,AE,AB,AD,q,w,r,z,AC){if(!h.w3cdom||!x||!AE||!AB||!AD||!q){return }AB+="";AD+="";if(c(q)){W(AE,false);var AA={};if(AC&&typeof AC===Q){for(var v in AC){if(AC[v]!=Object.prototype[v]){AA[v]=AC[v]}}}AA.data=x;AA.width=AB;AA.height=AD;var y={};if(z&&typeof z===Q){for(var u in z){if(z[u]!=Object.prototype[u]){y[u]=z[u]}}}if(r&&typeof r===Q){for(var t in r){if(r[t]!=Object.prototype[t]){if(typeof y.flashvars!=b){y.flashvars+="&"+t+"="+r[t]}else{y.flashvars=t+"="+r[t]}}}}f(function(){U(AA,y,AE);if(AA.id==AE){W(AE,true)}})}else{if(w&&!A&&c("6.0.65")&&(h.win||h.mac)){A=true;W(AE,false);f(function(){var AF={};AF.id=AF.altContentId=AE;AF.width=AB;AF.height=AD;AF.expressInstall=w;k(AF)})}}},getFlashPlayerVersion:function(){return{major:h.pv[0],minor:h.pv[1],release:h.pv[2]}},hasFlashPlayerVersion:c,createSWF:function(t,r,q){if(h.w3cdom){return U(t,r,q)}else{return undefined}},removeSWF:function(q){if(h.w3cdom){X(q)}},createCSS:function(r,q){if(h.w3cdom){V(r,q)}},addDomLoadEvent:f,addLoadEvent:R,getQueryParamValue:function(v){var u=K.location.search||K.location.hash;if(v==null){return g(u)}if(u){var t=u.substring(1).split("&");for(var r=0;r<t.length;r++){if(t[r].substring(0,t[r].indexOf("="))==v){return g(t[r].substring((t[r].indexOf("=")+1)))}}}return""},expressInstallCallback:function(){if(A&&M){var q=C(m);if(q){q.parentNode.replaceChild(M,q);if(l){W(l,true);if(h.ie&&h.win){M.style.display="block"}}M=null;l=null;A=false}}}}}();
/**
	sp.video.js 06.01.2009
	Copyright (c) 2010 Filippo Buratti; info [at] cssrevolt.com [dot] com; http://www.filippoburatti.net/

	Permission is hereby granted, free of charge, to any person obtaining a copy
	of this software and associated documentation files (the "Software"), to deal
	in the Software without restriction, including without limitation the rights
	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	copies of the Software, and to permit persons to whom the Software is
	furnished to do so, subject to the following conditions:

	The above copyright notice and this permission notice shall be included in
	all copies or substantial portions of the Software.

	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	THE SOFTWARE.
*/
var PlayBox = Class.create({
	
	initialize: function(element, options) {
		
		this.element 	= $(element);
		
		this.options 	= {	

			duration: 0.5, // overlay appare/fade effect
			opacity: 0.8,  // overlay opacity
			background:'#000000',
		
			// player configuration
			playerWidth: 425,
			playerHeight: 350,
			color: "CCCCCC",
			title:0, // show video title and rating
			fullscreen: 0, // fullscreen button
			autoplay:0,
			hd:0 // High definition 

		};
		Object.extend(this.options, options || {});
			
		this._setup(); 
		
	},
	
	_setup: function() {
 		 		
			this.PlayBox = new Element('div', {className:'playbox'});
			this.wrapper = new Element('div');
			this.PlayBox.insert(this.wrapper);
	
			this.element.observe('click', this._show.bind(this));		
			this.PlayBox.observe('click',  function(event) { Event.stop(event) });
			
			
	},
	
	_show: function (event) {
		
		Event.stop(event);
		
		this.overlay = new S2.UI.Overlay();
		this.overlayEl = this.overlay.toElement();
		this.overlayEl.addClassName('playbox-overlay');
		$(document.body).insert(this.overlay);
		this.overlayEl.hide();
		$(document.body).insert(this.PlayBox);
	
		this._embed();
	
		this.overlayEl.morph('opacity:' + this.options.opacity, { 
			duration: this.options.duration,
			before: function() {
				this._position();
				this.overlayEl.show().setStyle('opacity:0; background:' + this.options.background); 			
			}.bind(this)
		});
		
		this.overlayEl.observe('click', this._hide.bind(this));
	
	},
	
	_hide: function() {
		
		this.overlayEl.morph('opacity:0', {
        	duration: this.options.duration, 
			before: function() {
				this.PlayBox.remove(); 			
			}.bind(this),
        	after: function(){       		
				this.overlay.destroy();
        	}.bind(this)
		});
			
	},
	
	_embed: function() {
		
		var wrapperID = this.wrapper.identify();
		var url 	  = this.element.readAttribute('href');
		
		var flashvars = {			
			fs: this.options.fullscreen,
			fullscreen: this.options.fullscreen,			
			color: this.options.color,
			color2: this.options.color,		
			autoplay: this.options.autoplay,			
			hd: this.options.hd,
			showinfo: this.options.title
	
		};		
		var hd_off = (this.options.hd==1) ? 0 : 1;
    	var params = { 
			allowScriptAccess: "always",
			allowFullScreen: true,
			menu: false
		};
    	var atts = { };
    	
		swfobject.embedSWF(
			url+"&show_title="+this.options.title+"&hd_off="+hd_off, 
			wrapperID, 
			this.options.playerWidth, 
			this.options.playerHeight, 
			"9", 
			null, 
			flashvars, 
			params, 
			atts
		);
		
	},
	
	_position: function() {

      var vSize = document.viewport.getDimensions();
    
      var position = {
        left: ((vSize.width / 2) - (this.options.playerWidth / 2)),
        top: ((vSize.height / 2) - (this.options.playerHeight / 2))
      };

      var offsets = document.viewport.getScrollOffsets();

      position.left += offsets.left;
      position.top  += offsets.top;

      this.PlayBox.setStyle({
		width: this.options.playerWidth + 'px', 
		height: this.options.playerHeight + 'px',
        left: position.left + 'px',
        top:  position.top  + 'px'
      });
	  
    }

});
/**
	Protofade 1.3  24/10/2010
	Copyright (c) 2009 Filippo Buratti; info [at] cssrevolt.com [dot] com; http://www.filippoburatti.net/

	Permission is hereby granted, free of charge, to any person obtaining a copy
	of this software and associated documentation files (the "Software"), to deal
	in the Software without restriction, including without limitation the rights
	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	copies of the Software, and to permit persons to whom the Software is
	furnished to do so, subject to the following conditions:

	The above copyright notice and this permission notice shall be included in
	all copies or substantial portions of the Software.

	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	THE SOFTWARE.
*/

var Protofade = Class.create({
	
	initialize: function(element, options) {	
		this.options = {
      		duration: 1,
			delay: 4.0,
			randomize: false,
			autostart:true,
			controls:false,
			effect:'fade',
			eRows: 3, 
			eCols: 5,
			eColor: '#FFFFFF',
			eDirection:'horizontal'
    	}
		Object.extend(this.options, options || {});

    	this.element        = $(element);
		this.slides			= this.element.childElements();
		this.num_slides		= this.slides.length;		
		this.current_slide 	= (this.options.randomize) ? (Math.floor(Math.random()*this.num_slides)) : 0;
		this.end_slide		= this.num_slides - 1;
		
		this.slides.invoke('hide');
		this.slides[this.current_slide].show();
				
		if (this.options.autostart) { 
			this._start();
		}				
		if (this.options.controls) {
			this.addControls();
		}
		if (this.options.effect=='square') {
			this.buildSquares();
		}	
	},
	
	addControls: function() {		
		this.wrapper = this.element.up();
		this.controls = new Element('div', { 'class': 'controls' });
		this.wrapper.insert(this.controls);		
		this.btns = ['previous', 'next', 'start', 'stop'];	
		this.btns.each(function(el){
			var btn = new Element('a', { 'class': el, 'title': el, href: '#' }).update(el);
			this.controls.insert(btn);
			var action = '_' + el;
			btn.observe('click', this[action].bind(this));
		}.bind(this));
	},
	
	buildSquares: function() {		
		this.eSquares = [];
		var elDim = this.element.getDimensions();
		var elWidth = elDim.width, elHeight = elDim.height;				
		var sqWidth = elWidth/this.options.eCols, sqHeight = elHeight/this.options.eRows;
	
		$R(0, this.options.eCols-1).each(function(col) {
			this.eSquares[col] = [];							 	
			$R(0, this.options.eRows-1).each(function(row) {
				var sqLeft = col * sqWidth, sqTop  = row * sqHeight;
				this.eSquares[col][row] = new Element('div').setStyle({
 														    opacity: 0, backgroundColor: this.options.eColor,
															position: 'absolute', 'z-index': 5,
															left: sqLeft + 'px', top: sqTop + 'px',
															width: sqWidth + 'px', height: sqHeight + 'px'		
														});
				this.element.insert(this.eSquares[col][row]);				 							 										 
			}.bind(this))
		}.bind(this));			
	},

	_start: function(event) {
		if (event) { Event.stop(event); }
		if (!this.running)	{
			this.executer = new PeriodicalExecuter(function(){
	  			this.updateSlide(this.current_slide+1);
	 		}.bind(this),this.options.delay);
			this.running=true;
		}
	},
	
	_stop: function(event) {	
		if (event) { Event.stop(event); } 
		if (this.executer) { 
			this.executer.stop();
			this.running=false;
		}	 
	},

	_previous: function (event) {
		if (event) { Event.stop(event); }
		this._stop();
  		this.updateSlide(this.current_slide-1);
	},

	_next: function (event) {
		if (event) { Event.stop(event); }
		this._stop();
  		this.updateSlide(this.current_slide+1);
	},
	
	updateSlide: function (next_slide) {				
		if (next_slide > this.end_slide) { 
			next_slide = 0; 
		} 
		else if ( next_slide == -1 ) {
			next_slide = this.end_slide;
		}	
		
		if (this.options.effect!='flip') {
			this.fadeInOut(next_slide, this.current_slide);
		} else {
			this.flip(next_slide, this.current_slide);
		}		
	},

 	fadeInOut: function (next, current) {		
		this.slides[current].fade({ duration: this.options.duration, engine: 'javascript' });
		this.slides[next].appear({ duration: this.options.duration, engine: 'javascript' });
		
		if (this.options.effect=='square') {			
			$R(0, this.options.eCols-1).each(function(col) {	 						 	
				$R(0, this.options.eRows-1).each(function(row) {
					var eSquare = this.eSquares[col][row];
					var delay = Math.random() * 150;				
					setTimeout(this.delayedAppear.bind(this, eSquare), delay);
				}.bind(this))
			}.bind(this));	
		}
		
		this.current_slide = next;		
	},
	
	delayedAppear: function(eSquare)	{
		var opacity = Math.random();
		eSquare.morph('opacity:1', {duration: this.options.duration/4.5} );
		eSquare.morph('opacity:0', { duration: this.options.duration/1.5, position:'end'} );	
	},
	
	flip: function (next, current) {		
		var elDim = this.element.getDimensions();
		var elWidth = elDim.width, elHeight = elDim.height, cssIn = '', cssOut ='';
		
		switch(this.options.eDirection) {
			case "horizontal":
				cssIn 	= 'width:0px; left:' + elWidth/2 + 'px;';
				cssOut 	= 'width:' + elWidth + 'px; left:0px';
				break;
			case "vertical":
				cssIn 	= 'height:0; top:' + elHeight/2 + 'px;';
				cssOut 	= 'height:' + elHeight + 'px; top:0px';	  
				break;
		}
	
		this.element.morph(cssIn, {
        	duration: this.options.duration, 
			transition: 'easeInCubic',
        	after: function(){
        		this.slides[current].hide();
				this.slides[next].show();
          		this.element.morph(cssOut, {
            		duration: this.options.duration, 
					transition: 'easeOutCubic'
          		});
        	}.bind(this)
      	});
		
		this.current_slide = next;		
	}

});



function applicationStartUp() {

    new Protofade('slide-images', { delay: 5.0 });
	new PlayBox('video', { fullscreen: 1, autoplay: 1 });
		  
}


Event.observe (window, 'load',  applicationStartUp, false);