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

    Copyright (C) 2006-2008   Valerio Proietti   mad4milk.net

    Version:
      1.2.1

    Script: Core.js
      MooTools - My Object Oriented JavaScript Tools.

    License:
      MIT-style license

    Code & Documentation:
      [The MooTools production team](http://mootools.net/developers/).

    Inspiration:
      - Class implementation inspired by [Base.js](http://dean.edwards.name/weblog/2006/03/base/) Copyright (c) 2006 Dean Edwards, [GNU Lesser General Public License](http://opensource.org/licenses/lgpl-license.php)
      - Some functionality inspired by [Prototype.js](http://prototypejs.org) Copyright (c) 2005-2007 Sam Stephenson, [MIT License](http://opensource.org/licenses/mit-license.php)

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


  var MooTools = {
    'version': '1.2.1',
    'build': '0d4845aab3d9a4fdee2f0d4a6dd59210e4b697cf'
  };

  var Native = function(options){
    options = options || {};
    var name = options.name;
    var legacy = options.legacy;
    var protect = options.protect;
    var methods = options.implement;
    var generics = options.generics;
    var initialize = options.initialize;
    var afterImplement = options.afterImplement || function(){};
    var object = initialize || legacy;
    generics = generics !== false;

    object.constructor = Native;
    object.$family = {name: 'native'};
    if (legacy && initialize) object.prototype = legacy.prototype;
    object.prototype.constructor = object;

    if (name){
      var family = name.toLowerCase();
      object.prototype.$family = {name: family};
      Native.typize(object, family);
    }

    var add = function(obj, name, method, force){
      if (!protect || force || !obj.prototype[name]) obj.prototype[name] = method;
      if (generics) Native.genericize(obj, name, protect);
      afterImplement.call(obj, name, method);
      return obj;
    };

    object.alias = function(a1, a2, a3){
      if (typeof a1 == 'string'){
        if ((a1 = this.prototype[a1])) return add(this, a2, a1, a3);
      }
      for (var a in a1) this.alias(a, a1[a], a2);
      return this;
    };

    object.implement = function(a1, a2, a3){
      if (typeof a1 == 'string') return add(this, a1, a2, a3);
      for (var p in a1) add(this, p, a1[p], a2);
      return this;
    };

    if (methods) object.implement(methods);

    return object;
  };

  Native.genericize = function(object, property, check){
    if ((!check || !object[property]) && typeof object.prototype[property] == 'function') object[property] = function(){
      var args = Array.prototype.slice.call(arguments);
      return object.prototype[property].apply(args.shift(), args);
    };
  };

  Native.implement = function(objects, properties){
    for (var i = 0, l = objects.length; i < l; i++) objects[i].implement(properties);
  };

  Native.typize = function(object, family){
    if (!object.type) object.type = function(item){
      return ($type(item) === family);
    };
  };

  (function(){
    var natives = {'Array': Array, 'Date': Date, 'Function': Function, 'Number': Number, 'RegExp': RegExp, 'String': String};
    for (var n in natives) new Native({name: n, initialize: natives[n], protect: true});

    var types = {'boolean': Boolean, 'native': Native, 'object': Object};
    for (var t in types) Native.typize(types[t], t);

    var generics = {
      'Array': ["concat", "indexOf", "join", "lastIndexOf", "pop", "push", "reverse", "shift", "slice", "sort", "splice", "toString", "unshift", "valueOf"],
      'String': ["charAt", "charCodeAt", "concat", "indexOf", "lastIndexOf", "match", "replace", "search", "slice", "split", "substr", "substring", "toLowerCase", "toUpperCase", "valueOf"]
    };
    for (var g in generics){
      for (var i = generics[g].length; i--;) Native.genericize(window[g], generics[g][i], true);
    };
  })();

  var Hash = new Native({

    name: 'Hash',

    initialize: function(object){
      if ($type(object) == 'hash') object = $unlink(object.getClean());
      for (var key in object) this[key] = object[key];
      return this;
    }

  });

  Hash.implement({

    forEach: function(fn, bind){
      for (var key in this){
        if (this.hasOwnProperty(key)) fn.call(bind, this[key], key, this);
      }
    },

    getClean: function(){
      var clean = {};
      for (var key in this){
        if (this.hasOwnProperty(key)) clean[key] = this[key];
      }
      return clean;
    },

    getLength: function(){
      var length = 0;
      for (var key in this){
        if (this.hasOwnProperty(key)) length++;
      }
      return length;
    }

  });

  Hash.alias('forEach', 'each');

  Array.implement({

    forEach: function(fn, bind){
      for (var i = 0, l = this.length; i < l; i++) fn.call(bind, this[i], i, this);
    }

  });

  Array.alias('forEach', 'each');

  function $A(iterable){
    if (iterable.item){
      var array = [];
      for (var i = 0, l = iterable.length; i < l; i++) array[i] = iterable[i];
      return array;
    }
    return Array.prototype.slice.call(iterable);
  };

  function $arguments(i){
    return function(){
      return arguments[i];
    };
  };

  function $chk(obj){
    return !!(obj || obj === 0);
  };

  function $clear(timer){
    clearTimeout(timer);
    clearInterval(timer);
    return null;
  };

  function $defined(obj){
    return (obj != undefined);
  };

  function $each(iterable, fn, bind){
    var type = $type(iterable);
    ((type == 'arguments' || type == 'collection' || type == 'array') ? Array : Hash).each(iterable, fn, bind);
  };

  function $empty(){};

  function $extend(original, extended){
    for (var key in (extended || {})) original[key] = extended[key];
    return original;
  };

  function $H(object){
    return new Hash(object);
  };

  function $lambda(value){
    return (typeof value == 'function') ? value : function(){
      return value;
    };
  };

  function $merge(){
    var mix = {};
    for (var i = 0, l = arguments.length; i < l; i++){
      var object = arguments[i];
      if ($type(object) != 'object') continue;
      for (var key in object){
        var op = object[key], mp = mix[key];
        mix[key] = (mp && $type(op) == 'object' && $type(mp) == 'object') ? $merge(mp, op) : $unlink(op);
      }
    }
    return mix;
  };

  function $pick(){
    for (var i = 0, l = arguments.length; i < l; i++){
      if (arguments[i] != undefined) return arguments[i];
    }
    return null;
  };

  function $random(min, max){
    return Math.floor(Math.random() * (max - min + 1) + min);
  };

  function $splat(obj){
    var type = $type(obj);
    return (type) ? ((type != 'array' && type != 'arguments') ? [obj] : obj) : [];
  };

  var $time = Date.now || function(){
    return +new Date;
  };

  function $try(){
    for (var i = 0, l = arguments.length; i < l; i++){
      try {
        return arguments[i]();
      } catch(e){}
    }
    return null;
  };

  function $type(obj){
    if (obj == undefined) return false;
    if (obj.$family) return (obj.$family.name == 'number' && !isFinite(obj)) ? false : obj.$family.name;
    if (obj.nodeName){
      switch (obj.nodeType){
        case 1: return 'element';
        case 3: return (/\S/).test(obj.nodeValue) ? 'textnode' : 'whitespace';
      }
    } else if (typeof obj.length == 'number'){
      if (obj.callee) return 'arguments';
      else if (obj.item) return 'collection';
    }
    return typeof obj;
  };

  function $unlink(object){
    var unlinked;
    switch ($type(object)){
      case 'object':
        unlinked = {};
        for (var p in object) unlinked[p] = $unlink(object[p]);
      break;
      case 'hash':
        unlinked = new Hash(object);
      break;
      case 'array':
        unlinked = [];
        for (var i = 0, l = object.length; i < l; i++) unlinked[i] = $unlink(object[i]);
      break;
      default: return object;
    }
    return unlinked;
  };


  /*
  Script: Browser.js
    The Browser Core. Contains Browser initialization, Window and Document, and the Browser Hash.

  License:
    MIT-style license.
  */

  var Browser = $merge({

    Engine: {name: 'unknown', version: 0},

    Platform: {name: (window.orientation != undefined) ? 'ipod' : (navigator.platform.match(/mac|win|linux/i) || ['other'])[0].toLowerCase()},

    Features: {xpath: !!(document.evaluate), air: !!(window.runtime), query: !!(document.querySelector)},

    Plugins: {},

    Engines: {

      presto: function(){
        return (!window.opera) ? false : ((arguments.callee.caller) ? 960 : ((document.getElementsByClassName) ? 950 : 925));
      },

      trident: function(){
        return (!window.ActiveXObject) ? false : ((window.XMLHttpRequest) ? 5 : 4);
      },

      webkit: function(){
        return (navigator.taintEnabled) ? false : ((Browser.Features.xpath) ? ((Browser.Features.query) ? 525 : 420) : 419);
      },

      gecko: function(){
        return (document.getBoxObjectFor == undefined) ? false : ((document.getElementsByClassName) ? 19 : 18);
      }

    }

  }, Browser || {});

  Browser.Platform[Browser.Platform.name] = true;

  Browser.detect = function(){

    for (var engine in this.Engines){
      var version = this.Engines[engine]();
      if (version){
        this.Engine = {name: engine, version: version};
        this.Engine[engine] = this.Engine[engine + version] = true;
        break;
      }
    }

    return {name: engine, version: version};

  };

  Browser.detect();

  Browser.Request = function(){
    return $try(function(){
      return new XMLHttpRequest();
    }, function(){
      return new ActiveXObject('MSXML2.XMLHTTP');
    });
  };

  Browser.Features.xhr = !!(Browser.Request());

  Browser.Plugins.Flash = (function(){
    var version = ($try(function(){
      return navigator.plugins['Shockwave Flash'].description;
    }, function(){
      return new ActiveXObject('ShockwaveFlash.ShockwaveFlash').GetVariable('$version');
    }) || '0 r0').match(/\d+/g);
    return {version: parseInt(version[0] || 0 + '.' + version[1] || 0), build: parseInt(version[2] || 0)};
  })();

  function $exec(text){
    if (!text) return text;
    if (window.execScript){
      window.execScript(text);
    } else {
      var script = document.createElement('script');
      script.setAttribute('type', 'text/javascript');
      script[(Browser.Engine.webkit && Browser.Engine.version < 420) ? 'innerText' : 'text'] = text;
      document.head.appendChild(script);
      document.head.removeChild(script);
    }
    return text;
  };

  Native.UID = 1;

  var $uid = (Browser.Engine.trident) ? function(item){
    return (item.uid || (item.uid = [Native.UID++]))[0];
  } : function(item){
    return item.uid || (item.uid = Native.UID++);
  };

  var Window = new Native({

    name: 'Window',

    legacy: (Browser.Engine.trident) ? null: window.Window,

    initialize: function(win){
      $uid(win);
      if (!win.Element){
        win.Element = $empty;
        if (Browser.Engine.webkit) win.document.createElement("iframe"); //fixes safari 2
        win.Element.prototype = (Browser.Engine.webkit) ? window["[[DOMElement.prototype]]"] : {};
      }
      win.document.window = win;
      return $extend(win, Window.Prototype);
    },

    afterImplement: function(property, value){
      window[property] = Window.Prototype[property] = value;
    }

  });

  Window.Prototype = {$family: {name: 'window'}};

  new Window(window);

  var Document = new Native({

    name: 'Document',

    legacy: (Browser.Engine.trident) ? null: window.Document,

    initialize: function(doc){
      $uid(doc);
      doc.head = doc.getElementsByTagName('head')[0];
      doc.html = doc.getElementsByTagName('html')[0];
      if (Browser.Engine.trident && Browser.Engine.version <= 4) $try(function(){
        doc.execCommand("BackgroundImageCache", false, true);
      });
      if (Browser.Engine.trident) doc.window.attachEvent('onunload', function() {
        doc.window.detachEvent('onunload', arguments.callee);
        doc.head = doc.html = doc.window = null;
      });
      return $extend(doc, Document.Prototype);
    },

    afterImplement: function(property, value){
      document[property] = Document.Prototype[property] = value;
    }

  });

  Document.Prototype = {$family: {name: 'document'}};

  new Document(document);


  /*
  Script: Array.js
    Contains Array Prototypes like each, contains, and erase.

  License:
    MIT-style license.
  */

  Array.implement({

    every: function(fn, bind){
      for (var i = 0, l = this.length; i < l; i++){
        if (!fn.call(bind, this[i], i, this)) return false;
      }
      return true;
    },

    filter: function(fn, bind){
      var results = [];
      for (var i = 0, l = this.length; i < l; i++){
        if (fn.call(bind, this[i], i, this)) results.push(this[i]);
      }
      return results;
    },

    clean: function() {
      return this.filter($defined);
    },

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

    map: function(fn, bind){
      var results = [];
      for (var i = 0, l = this.length; i < l; i++) results[i] = fn.call(bind, this[i], i, this);
      return results;
    },

    some: function(fn, bind){
      for (var i = 0, l = this.length; i < l; i++){
        if (fn.call(bind, this[i], i, this)) return true;
      }
      return false;
    },

    associate: function(keys){
      var obj = {}, length = Math.min(this.length, keys.length);
      for (var i = 0; i < length; i++) obj[keys[i]] = this[i];
      return obj;
    },

    link: function(object){
      var result = {};
      for (var i = 0, l = this.length; i < l; i++){
        for (var key in object){
          if (object[key](this[i])){
            result[key] = this[i];
            delete object[key];
            break;
          }
        }
      }
      return result;
    },

    contains: function(item, from){
      return this.indexOf(item, from) != -1;
    },

    extend: function(array){
      for (var i = 0, j = array.length; i < j; i++) this.push(array[i]);
      return this;
    },

    getLast: function(){
      return (this.length) ? this[this.length - 1] : null;
    },

    getRandom: function(){
      return (this.length) ? this[$random(0, this.length - 1)] : null;
    },

    include: function(item){
      if (!this.contains(item)) this.push(item);
      return this;
    },

    combine: function(array){
      for (var i = 0, l = array.length; i < l; i++) this.include(array[i]);
      return this;
    },

    erase: function(item){
      for (var i = this.length; i--; i){
        if (this[i] === item) this.splice(i, 1);
      }
      return this;
    },

    empty: function(){
      this.length = 0;
      return this;
    },

    flatten: function(){
      var array = [];
      for (var i = 0, l = this.length; i < l; i++){
        var type = $type(this[i]);
        if (!type) continue;
        array = array.concat((type == 'array' || type == 'collection' || type == 'arguments') ? Array.flatten(this[i]) : this[i]);
      }
      return array;
    },

    hexToRgb: function(array){
      if (this.length != 3) return null;
      var rgb = this.map(function(value){
        if (value.length == 1) value += value;
        return value.toInt(16);
      });
      return (array) ? rgb : 'rgb(' + rgb + ')';
    },

    rgbToHex: function(array){
      if (this.length < 3) return null;
      if (this.length == 4 && this[3] == 0 && !array) return 'transparent';
      var hex = [];
      for (var i = 0; i < 3; i++){
        var bit = (this[i] - 0).toString(16);
        hex.push((bit.length == 1) ? '0' + bit : bit);
      }
      return (array) ? hex : '#' + hex.join('');
    }

  });


  /*
  Script: Function.js
    Contains Function Prototypes like create, bind, pass, and delay.

  License:
    MIT-style license.
  */

  Function.implement({

    extend: function(properties){
      for (var property in properties) this[property] = properties[property];
      return this;
    },

    create: function(options){
      var self = this;
      options = options || {};
      return function(event){
        var args = options.arguments;
        args = (args != undefined) ? $splat(args) : Array.slice(arguments, (options.event) ? 1 : 0);
        if (options.event) args = [event || window.event].extend(args);
        var returns = function(){
          return self.apply(options.bind || null, args);
        };
        if (options.delay) return setTimeout(returns, options.delay);
        if (options.periodical) return setInterval(returns, options.periodical);
        if (options.attempt) return $try(returns);
        return returns();
      };
    },

    run: function(args, bind){
      return this.apply(bind, $splat(args));
    },

    pass: function(args, bind){
      return this.create({bind: bind, arguments: args});
    },

    bind: function(bind, args){
      return this.create({bind: bind, arguments: args});
    },

    bindWithEvent: function(bind, args){
      return this.create({bind: bind, arguments: args, event: true});
    },

    attempt: function(args, bind){
      return this.create({bind: bind, arguments: args, attempt: true})();
    },

    delay: function(delay, bind, args){
      return this.create({bind: bind, arguments: args, delay: delay})();
    },

    periodical: function(periodical, bind, args){
      return this.create({bind: bind, arguments: args, periodical: periodical})();
    }

  });


  /*
  Script: Number.js
    Contains Number Prototypes like limit, round, times, and ceil.

  License:
    MIT-style license.
  */

  Number.implement({

    limit: function(min, max){
      return Math.min(max, Math.max(min, this));
    },

    round: function(precision){
      precision = Math.pow(10, precision || 0);
      return Math.round(this * precision) / precision;
    },

    times: function(fn, bind){
      for (var i = 0; i < this; i++) fn.call(bind, i, this);
    },

    toFloat: function(){
      return parseFloat(this);
    },

    toInt: function(base){
      return parseInt(this, base || 10);
    }

  });

  Number.alias('times', 'each');

  (function(math){
    var methods = {};
    math.each(function(name){
      if (!Number[name]) methods[name] = function(){
        return Math[name].apply(null, [this].concat($A(arguments)));
      };
    });
    Number.implement(methods);
  })(['abs', 'acos', 'asin', 'atan', 'atan2', 'ceil', 'cos', 'exp', 'floor', 'log', 'max', 'min', 'pow', 'sin', 'sqrt', 'tan']);


  /*
  Script: String.js
    Contains String Prototypes like camelCase, capitalize, test, and toInt.

  License:
    MIT-style license.
  */

  String.implement({

    test: function(regex, params){
      return ((typeof regex == 'string') ? new RegExp(regex, params) : regex).test(this);
    },

    contains: function(string, separator){
      return (separator) ? (separator + this + separator).indexOf(separator + string + separator) > -1 : this.indexOf(string) > -1;
    },

    trim: function(){
      return this.replace(/^\s+|\s+$/g, '');
    },

    clean: function(){
      return this.replace(/\s+/g, ' ').trim();
    },

    camelCase: function(){
      return this.replace(/-\D/g, function(match){
        return match.charAt(1).toUpperCase();
      });
    },

    hyphenate: function(){
      return this.replace(/[A-Z]/g, function(match){
        return ('-' + match.charAt(0).toLowerCase());
      });
    },

    capitalize: function(){
      return this.replace(/\b[a-z]/g, function(match){
        return match.toUpperCase();
      });
    },

    escapeRegExp: function(){
      return this.replace(/([-.*+?^${}()|[\]\/\\])/g, '\\$1');
    },

    toInt: function(base){
      return parseInt(this, base || 10);
    },

    toFloat: function(){
      return parseFloat(this);
    },

    hexToRgb: function(array){
      var hex = this.match(/^#?(\w{1,2})(\w{1,2})(\w{1,2})$/);
      return (hex) ? hex.slice(1).hexToRgb(array) : null;
    },

    rgbToHex: function(array){
      var rgb = this.match(/\d{1,3}/g);
      return (rgb) ? rgb.rgbToHex(array) : null;
    },

    stripScripts: function(option){
      var scripts = '';
      var text = this.replace(/<script[^>]*>([\s\S]*?)<\/script>/gi, function(){
        scripts += arguments[1] + '\n';
        return '';
      });
      if (option === true) $exec(scripts);
      else if ($type(option) == 'function') option(scripts, text);
      return text;
    },

    substitute: function(object, regexp){
      return this.replace(regexp || (/\\?\{([^{}]+)\}/g), function(match, name){
        if (match.charAt(0) == '\\') return match.slice(1);
        return (object[name] != undefined) ? object[name] : '';
      });
    }

  });


  /*
  Script: Hash.js
    Contains Hash Prototypes. Provides a means for overcoming the JavaScript practical impossibility of extending native Objects.

  License:
    MIT-style license.
  */

  Hash.implement({

    has: Object.prototype.hasOwnProperty,

    keyOf: function(value){
      for (var key in this){
        if (this.hasOwnProperty(key) && this[key] === value) return key;
      }
      return null;
    },

    hasValue: function(value){
      return (Hash.keyOf(this, value) !== null);
    },

    extend: function(properties){
      Hash.each(properties, function(value, key){
        Hash.set(this, key, value);
      }, this);
      return this;
    },

    combine: function(properties){
      Hash.each(properties, function(value, key){
        Hash.include(this, key, value);
      }, this);
      return this;
    },

    erase: function(key){
      if (this.hasOwnProperty(key)) delete this[key];
      return this;
    },

    get: function(key){
      return (this.hasOwnProperty(key)) ? this[key] : null;
    },

    set: function(key, value){
      if (!this[key] || this.hasOwnProperty(key)) this[key] = value;
      return this;
    },

    empty: function(){
      Hash.each(this, function(value, key){
        delete this[key];
      }, this);
      return this;
    },

    include: function(key, value){
      var k = this[key];
      if (k == undefined) this[key] = value;
      return this;
    },

    map: function(fn, bind){
      var results = new Hash;
      Hash.each(this, function(value, key){
        results.set(key, fn.call(bind, value, key, this));
      }, this);
      return results;
    },

    filter: function(fn, bind){
      var results = new Hash;
      Hash.each(this, function(value, key){
        if (fn.call(bind, value, key, this)) results.set(key, value);
      }, this);
      return results;
    },

    every: function(fn, bind){
      for (var key in this){
        if (this.hasOwnProperty(key) && !fn.call(bind, this[key], key)) return false;
      }
      return true;
    },

    some: function(fn, bind){
      for (var key in this){
        if (this.hasOwnProperty(key) && fn.call(bind, this[key], key)) return true;
      }
      return false;
    },

    getKeys: function(){
      var keys = [];
      Hash.each(this, function(value, key){
        keys.push(key);
      });
      return keys;
    },

    getValues: function(){
      var values = [];
      Hash.each(this, function(value){
        values.push(value);
      });
      return values;
    },

    toQueryString: function(base){
      var queryString = [];
      Hash.each(this, function(value, key){
        if (base) key = base + '[' + key + ']';
        var result;
        switch ($type(value)){
          case 'object': result = Hash.toQueryString(value, key); break;
          case 'array':
            var qs = {};
            value.each(function(val, i){
              qs[i] = val;
            });
            result = Hash.toQueryString(qs, key);
          break;
          default: result = key + '=' + encodeURIComponent(value);
        }
        if (value != undefined) queryString.push(result);
      });

      return queryString.join('&');
    }

  });

  Hash.alias({keyOf: 'indexOf', hasValue: 'contains'});


  /*
  Script: Event.js
    Contains the Event Native, to make the event object completely crossbrowser.

  License:
    MIT-style license.
  */

  var Event = new Native({

    name: 'Event',

    initialize: function(event, win){
      win = win || window;
      var doc = win.document;
      event = event || win.event;
      if (event.$extended) return event;
      this.$extended = true;
      var type = event.type;
      var target = event.target || event.srcElement;
      while (target && target.nodeType == 3) target = target.parentNode;

      if (type.test(/key/)){
        var code = event.which || event.keyCode;
        var key = Event.Keys.keyOf(code);
        if (type == 'keydown'){
          var fKey = code - 111;
          if (fKey > 0 && fKey < 13) key = 'f' + fKey;
        }
        key = key || String.fromCharCode(code).toLowerCase();
      } else if (type.match(/(click|mouse|menu)/i)){
        doc = (!doc.compatMode || doc.compatMode == 'CSS1Compat') ? doc.html : doc.body;
        var page = {
          x: event.pageX || event.clientX + doc.scrollLeft,
          y: event.pageY || event.clientY + doc.scrollTop
        };
        var client = {
          x: (event.pageX) ? event.pageX - win.pageXOffset : event.clientX,
          y: (event.pageY) ? event.pageY - win.pageYOffset : event.clientY
        };
        if (type.match(/DOMMouseScroll|mousewheel/)){
          var wheel = (event.wheelDelta) ? event.wheelDelta / 120 : -(event.detail || 0) / 3;
        }
        var rightClick = (event.which == 3) || (event.button == 2);
        var related = null;
        if (type.match(/over|out/)){
          switch (type){
            case 'mouseover': related = event.relatedTarget || event.fromElement; break;
            case 'mouseout': related = event.relatedTarget || event.toElement;
          }
          if (!(function(){
            while (related && related.nodeType == 3) related = related.parentNode;
            return true;
          }).create({attempt: Browser.Engine.gecko})()) related = false;
        }
      }

      return $extend(this, {
        event: event,
        type: type,

        page: page,
        client: client,
        rightClick: rightClick,

        wheel: wheel,

        relatedTarget: related,
        target: target,

        code: code,
        key: key,

        shift: event.shiftKey,
        control: event.ctrlKey,
        alt: event.altKey,
        meta: event.metaKey
      });
    }

  });

  Event.Keys = new Hash({
    'enter': 13,
    'up': 38,
    'down': 40,
    'left': 37,
    'right': 39,
    'esc': 27,
    'space': 32,
    'backspace': 8,
    'tab': 9,
    'delete': 46
  });

  Event.implement({

    stop: function(){
      return this.stopPropagation().preventDefault();
    },

    stopPropagation: function(){
      if (this.event.stopPropagation) this.event.stopPropagation();
      else this.event.cancelBubble = true;
      return this;
    },

    preventDefault: function(){
      if (this.event.preventDefault) this.event.preventDefault();
      else this.event.returnValue = false;
      return this;
    }

  });


  /*
  Script: Class.js
    Contains the Class Function for easily creating, extending, and implementing reusable Classes.

  License:
    MIT-style license.
  */

  var Class = new Native({

    name: 'Class',

    initialize: function(properties){
      properties = properties || {};
      var klass = function(){
        for (var key in this){
          if ($type(this[key]) != 'function') this[key] = $unlink(this[key]);
        }
        this.constructor = klass;
        if (Class.prototyping) return this;
        var instance = (this.initialize) ? this.initialize.apply(this, arguments) : this;
        if (this.options && this.options.initialize) this.options.initialize.call(this);
        return instance;
      };

      for (var mutator in Class.Mutators){
        if (!properties[mutator]) continue;
        properties = Class.Mutators[mutator](properties, properties[mutator]);
        delete properties[mutator];
      }

      $extend(klass, this);
      klass.constructor = Class;
      klass.prototype = properties;
      return klass;
    }

  });

  Class.Mutators = {

    Extends: function(self, klass){
      Class.prototyping = klass.prototype;
      var subclass = new klass;
      delete subclass.parent;
      subclass = Class.inherit(subclass, self);
      delete Class.prototyping;
      return subclass;
    },

    Implements: function(self, klasses){
      $splat(klasses).each(function(klass){
        Class.prototying = klass;
        $extend(self, ($type(klass) == 'class') ? new klass : klass);
        delete Class.prototyping;
      });
      return self;
    }

  };

  Class.extend({

    inherit: function(object, properties){
      var caller = arguments.callee.caller;
      for (var key in properties){
        var override = properties[key];
        var previous = object[key];
        var type = $type(override);
        if (previous && type == 'function'){
          if (override != previous){
            if (caller){
              override.__parent = previous;
              object[key] = override;
            } else {
              Class.override(object, key, override);
            }
          }
        } else if(type == 'object'){
          object[key] = $merge(previous, override);
        } else {
          object[key] = override;
        }
      }

      if (caller) object.parent = function(){
        return arguments.callee.caller.__parent.apply(this, arguments);
      };

      return object;
    },

    override: function(object, name, method){
      var parent = Class.prototyping;
      if (parent && object[name] != parent[name]) parent = null;
      var override = function(){
        var previous = this.parent;
        this.parent = parent ? parent[name] : object[name];
        var value = method.apply(this, arguments);
        this.parent = previous;
        return value;
      };
      object[name] = override;
    }

  });

  Class.implement({

    implement: function(){
      var proto = this.prototype;
      $each(arguments, function(properties){
        Class.inherit(proto, properties);
      });
      return this;
    }

  });


  /*
  Script: Class.Extras.js
    Contains Utility Classes that can be implemented into your own Classes to ease the execution of many common tasks.

  License:
    MIT-style license.
  */

  var Chain = new Class({

    $chain: [],

    chain: function(){
      this.$chain.extend(Array.flatten(arguments));
      return this;
    },

    callChain: function(){
      return (this.$chain.length) ? this.$chain.shift().apply(this, arguments) : false;
    },

    clearChain: function(){
      this.$chain.empty();
      return this;
    }

  });

  var Events = new Class({

    $events: {},

    addEvent: function(type, fn, internal){
      type = Events.removeOn(type);
      if (fn != $empty){
        this.$events[type] = this.$events[type] || [];
        this.$events[type].include(fn);
        if (internal) fn.internal = true;
      }
      return this;
    },

    addEvents: function(events){
      for (var type in events) this.addEvent(type, events[type]);
      return this;
    },

    fireEvent: function(type, args, delay){
      type = Events.removeOn(type);
      if (!this.$events || !this.$events[type]) return this;
      this.$events[type].each(function(fn){
        fn.create({'bind': this, 'delay': delay, 'arguments': args})();
      }, this);
      return this;
    },

    removeEvent: function(type, fn){
      type = Events.removeOn(type);
      if (!this.$events[type]) return this;
      if (!fn.internal) this.$events[type].erase(fn);
      return this;
    },

    removeEvents: function(events){
      if ($type(events) == 'object'){
        for (var type in events) this.removeEvent(type, events[type]);
        return this;
      }
      if (events) events = Events.removeOn(events);
      for (var type in this.$events){
        if (events && events != type) continue;
        var fns = this.$events[type];
        for (var i = fns.length; i--; i) this.removeEvent(type, fns[i]);
      }
      return this;
    }

  });

  Events.removeOn = function(string){
    return string.replace(/^on([A-Z])/, function(full, first) {
      return first.toLowerCase();
    });
  };

  var Options = new Class({

    setOptions: function(){
      this.options = $merge.run([this.options].extend(arguments));
      if (!this.addEvent) return this;
      for (var option in this.options){
        if ($type(this.options[option]) != 'function' || !(/^on[A-Z]/).test(option)) continue;
        this.addEvent(option, this.options[option]);
        delete this.options[option];
      }
      return this;
    }

  });


  /*
  Script: Element.js
    One of the most important items in MooTools. Contains the dollar function, the dollars function, and an handful of cross-browser,
    time-saver methods to let you easily work with HTML Elements.

  License:
    MIT-style license.
  */

  var Element = new Native({

    name: 'Element',

    legacy: window.Element,

    initialize: function(tag, props){
      var konstructor = Element.Constructors.get(tag);
      if (konstructor) return konstructor(props);
      if (typeof tag == 'string') return document.newElement(tag, props);
      return $(tag).set(props);
    },

    afterImplement: function(key, value){
      Element.Prototype[key] = value;
      if (Array[key]) return;
      Elements.implement(key, function(){
        var items = [], elements = true;
        for (var i = 0, j = this.length; i < j; i++){
          var returns = this[i][key].apply(this[i], arguments);
          items.push(returns);
          if (elements) elements = ($type(returns) == 'element');
        }
        return (elements) ? new Elements(items) : items;
      });
    }

  });

  Element.Prototype = {$family: {name: 'element'}};

  Element.Constructors = new Hash;

  var IFrame = new Native({

    name: 'IFrame',

    generics: false,

    initialize: function(){
      var params = Array.link(arguments, {properties: Object.type, iframe: $defined});
      var props = params.properties || {};
      var iframe = $(params.iframe) || false;
      var onload = props.onload || $empty;
      delete props.onload;
      props.id = props.name = $pick(props.id, props.name, iframe.id, iframe.name, 'IFrame_' + $time());
      iframe = new Element(iframe || 'iframe', props);
      var onFrameLoad = function(){
        var host = $try(function(){
          return iframe.contentWindow.location.host;
        });
        if (host && host == window.location.host){
          var win = new Window(iframe.contentWindow);
          new Document(iframe.contentWindow.document);
          $extend(win.Element.prototype, Element.Prototype);
        }
        onload.call(iframe.contentWindow, iframe.contentWindow.document);
      };
      (window.frames[props.id]) ? onFrameLoad() : iframe.addListener('load', onFrameLoad);
      return iframe;
    }

  });

  var Elements = new Native({

    initialize: function(elements, options){
      options = $extend({ddup: true, cash: true}, options);
      elements = elements || [];
      if (options.ddup || options.cash){
        var uniques = {}, returned = [];
        for (var i = 0, l = elements.length; i < l; i++){
          var el = $.element(elements[i], !options.cash);
          if (options.ddup){
            if (uniques[el.uid]) continue;
            uniques[el.uid] = true;
          }
          returned.push(el);
        }
        elements = returned;
      }
      return (options.cash) ? $extend(elements, this) : elements;
    }

  });

  Elements.implement({

    filter: function(filter, bind){
      if (!filter) return this;
      return new Elements(Array.filter(this, (typeof filter == 'string') ? function(item){
        return item.match(filter);
      } : filter, bind));
    }

  });

  Document.implement({

    newElement: function(tag, props){
      if (Browser.Engine.trident && props){
        ['name', 'type', 'checked'].each(function(attribute){
          if (!props[attribute]) return;
          tag += ' ' + attribute + '="' + props[attribute] + '"';
          if (attribute != 'checked') delete props[attribute];
        });
        tag = '<' + tag + '>';
      }
      return $.element(this.createElement(tag)).set(props);
    },

    newTextNode: function(text){
      return this.createTextNode(text);
    },

    getDocument: function(){
      return this;
    },

    getWindow: function(){
      return this.window;
    }

  });

  Window.implement({

    $: function(el, nocash){
      if (el && el.$family && el.uid) return el;
      var type = $type(el);
      return ($[type]) ? $[type](el, nocash, this.document) : null;
    },

    $$: function(selector){
      if (arguments.length == 1 && typeof selector == 'string') return this.document.getElements(selector);
      var elements = [];
      var args = Array.flatten(arguments);
      for (var i = 0, l = args.length; i < l; i++){
        var item = args[i];
        switch ($type(item)){
          case 'element': elements.push(item); break;
          case 'string': elements.extend(this.document.getElements(item, true));
        }
      }
      return new Elements(elements);
    },

    getDocument: function(){
      return this.document;
    },

    getWindow: function(){
      return this;
    }

  });

  $.string = function(id, nocash, doc){
    id = doc.getElementById(id);
    return (id) ? $.element(id, nocash) : null;
  };

  $.element = function(el, nocash){
    $uid(el);
    if (!nocash && !el.$family && !(/^object|embed$/i).test(el.tagName)){
      var proto = Element.Prototype;
      for (var p in proto) el[p] = proto[p];
    };
    return el;
  };

  $.object = function(obj, nocash, doc){
    if (obj.toElement) return $.element(obj.toElement(doc), nocash);
    return null;
  };

  $.textnode = $.whitespace = $.window = $.document = $arguments(0);

  Native.implement([Element, Document], {

    getElement: function(selector, nocash){
      return $(this.getElements(selector, true)[0] || null, nocash);
    },

    getElements: function(tags, nocash){
      tags = tags.split(',');
      var elements = [];
      var ddup = (tags.length > 1);
      tags.each(function(tag){
        var partial = this.getElementsByTagName(tag.trim());
        (ddup) ? elements.extend(partial) : elements = partial;
      }, this);
      return new Elements(elements, {ddup: ddup, cash: !nocash});
    }

  });

  (function(){

  var collected = {}, storage = {};
  var props = {input: 'checked', option: 'selected', textarea: (Browser.Engine.webkit && Browser.Engine.version < 420) ? 'innerHTML' : 'value'};

  var get = function(uid){
    return (storage[uid] || (storage[uid] = {}));
  };

  var clean = function(item, retain){
    if (!item) return;
    var uid = item.uid;
    if (Browser.Engine.trident){
      if (item.clearAttributes){
        var clone = retain && item.cloneNode(false);
        item.clearAttributes();
        if (clone) item.mergeAttributes(clone);
      } else if (item.removeEvents){
        item.removeEvents();
      }
      if ((/object/i).test(item.tagName)){
        for (var p in item){
          if (typeof item[p] == 'function') item[p] = $empty;
        }
        Element.dispose(item);
      }
    }
    if (!uid) return;
    collected[uid] = storage[uid] = null;
  };

  var purge = function(){
    Hash.each(collected, clean);
    if (Browser.Engine.trident) $A(document.getElementsByTagName('object')).each(clean);
    if (window.CollectGarbage) CollectGarbage();
    collected = storage = null;
  };

  var walk = function(element, walk, start, match, all, nocash){
    var el = element[start || walk];
    var elements = [];
    while (el){
      if (el.nodeType == 1 && (!match || Element.match(el, match))){
        if (!all) return $(el, nocash);
        elements.push(el);
      }
      el = el[walk];
    }
    return (all) ? new Elements(elements, {ddup: false, cash: !nocash}) : null;
  };

  var attributes = {
    'html': 'innerHTML',
    'class': 'className',
    'for': 'htmlFor',
    'text': (Browser.Engine.trident || (Browser.Engine.webkit && Browser.Engine.version < 420)) ? 'innerText' : 'textContent'
  };
  var bools = ['compact', 'nowrap', 'ismap', 'declare', 'noshade', 'checked', 'disabled', 'readonly', 'multiple', 'selected', 'noresize', 'defer'];
  var camels = ['value', 'accessKey', 'cellPadding', 'cellSpacing', 'colSpan', 'frameBorder', 'maxLength', 'readOnly', 'rowSpan', 'tabIndex', 'useMap'];

  Hash.extend(attributes, bools.associate(bools));
  Hash.extend(attributes, camels.associate(camels.map(String.toLowerCase)));

  var inserters = {

    before: function(context, element){
      if (element.parentNode) element.parentNode.insertBefore(context, element);
    },

    after: function(context, element){
      if (!element.parentNode) return;
      var next = element.nextSibling;
      (next) ? element.parentNode.insertBefore(context, next) : element.parentNode.appendChild(context);
    },

    bottom: function(context, element){
      element.appendChild(context);
    },

    top: function(context, element){
      var first = element.firstChild;
      (first) ? element.insertBefore(context, first) : element.appendChild(context);
    }

  };

  inserters.inside = inserters.bottom;

  Hash.each(inserters, function(inserter, where){

    where = where.capitalize();

    Element.implement('inject' + where, function(el){
      inserter(this, $(el, true));
      return this;
    });

    Element.implement('grab' + where, function(el){
      inserter($(el, true), this);
      return this;
    });

  });

  Element.implement({

    set: function(prop, value){
      switch ($type(prop)){
        case 'object':
          for (var p in prop) this.set(p, prop[p]);
          break;
        case 'string':
          var property = Element.Properties.get(prop);
          (property && property.set) ? property.set.apply(this, Array.slice(arguments, 1)) : this.setProperty(prop, value);
      }
      return this;
    },

    get: function(prop){
      var property = Element.Properties.get(prop);
      return (property && property.get) ? property.get.apply(this, Array.slice(arguments, 1)) : this.getProperty(prop);
    },

    erase: function(prop){
      var property = Element.Properties.get(prop);
      (property && property.erase) ? property.erase.apply(this) : this.removeProperty(prop);
      return this;
    },

    setProperty: function(attribute, value){
      var key = attributes[attribute];
      if (value == undefined) return this.removeProperty(attribute);
      if (key && bools[attribute]) value = !!value;
      (key) ? this[key] = value : this.setAttribute(attribute, '' + value);
      return this;
    },

    setProperties: function(attributes){
      for (var attribute in attributes) this.setProperty(attribute, attributes[attribute]);
      return this;
    },

    getProperty: function(attribute){
      var key = attributes[attribute];
      var value = (key) ? this[key] : this.getAttribute(attribute, 2);
      return (bools[attribute]) ? !!value : (key) ? value : value || null;
    },

    getProperties: function(){
      var args = $A(arguments);
      return args.map(this.getProperty, this).associate(args);
    },

    removeProperty: function(attribute){
      var key = attributes[attribute];
      (key) ? this[key] = (key && bools[attribute]) ? false : '' : this.removeAttribute(attribute);
      return this;
    },

    removeProperties: function(){
      Array.each(arguments, this.removeProperty, this);
      return this;
    },

    hasClass: function(className){
      return this.className.contains(className, ' ');
    },

    addClass: function(className){
      if (!this.hasClass(className)) this.className = (this.className + ' ' + className).clean();
      return this;
    },

    removeClass: function(className){
      this.className = this.className.replace(new RegExp('(^|\\s)' + className + '(?:\\s|$)'), '$1');
      return this;
    },

    toggleClass: function(className){
      return this.hasClass(className) ? this.removeClass(className) : this.addClass(className);
    },

    adopt: function(){
      Array.flatten(arguments).each(function(element){
        element = $(element, true);
        if (element) this.appendChild(element);
      }, this);
      return this;
    },

    appendText: function(text, where){
      return this.grab(this.getDocument().newTextNode(text), where);
    },

    grab: function(el, where){
      inserters[where || 'bottom']($(el, true), this);
      return this;
    },

    inject: function(el, where){
      inserters[where || 'bottom'](this, $(el, true));
      return this;
    },

    replaces: function(el){
      el = $(el, true);
      el.parentNode.replaceChild(this, el);
      return this;
    },

    wraps: function(el, where){
      el = $(el, true);
      return this.replaces(el).grab(el, where);
    },

    getPrevious: function(match, nocash){
      return walk(this, 'previousSibling', null, match, false, nocash);
    },

    getAllPrevious: function(match, nocash){
      return walk(this, 'previousSibling', null, match, true, nocash);
    },

    getNext: function(match, nocash){
      return walk(this, 'nextSibling', null, match, false, nocash);
    },

    getAllNext: function(match, nocash){
      return walk(this, 'nextSibling', null, match, true, nocash);
    },

    getFirst: function(match, nocash){
      return walk(this, 'nextSibling', 'firstChild', match, false, nocash);
    },

    getLast: function(match, nocash){
      return walk(this, 'previousSibling', 'lastChild', match, false, nocash);
    },

    getParent: function(match, nocash){
      return walk(this, 'parentNode', null, match, false, nocash);
    },

    getParents: function(match, nocash){
      return walk(this, 'parentNode', null, match, true, nocash);
    },

    getChildren: function(match, nocash){
      return walk(this, 'nextSibling', 'firstChild', match, true, nocash);
    },

    getWindow: function(){
      return this.ownerDocument.window;
    },

    getDocument: function(){
      return this.ownerDocument;
    },

    getElementById: function(id, nocash){
      var el = this.ownerDocument.getElementById(id);
      if (!el) return null;
      for (var parent = el.parentNode; parent != this; parent = parent.parentNode){
        if (!parent) return null;
      }
      return $.element(el, nocash);
    },

    getSelected: function(){
      return new Elements($A(this.options).filter(function(option){
        return option.selected;
      }));
    },

    getComputedStyle: function(property){
      if (this.currentStyle) return this.currentStyle[property.camelCase()];
      var computed = this.getDocument().defaultView.getComputedStyle(this, null);
      return (computed) ? computed.getPropertyValue([property.hyphenate()]) : null;
    },

    toQueryString: function(){
      var queryString = [];
      this.getElements('input, select, textarea', true).each(function(el){
        if (!el.name || el.disabled) return;
        var value = (el.tagName.toLowerCase() == 'select') ? Element.getSelected(el).map(function(opt){
          return opt.value;
        }) : ((el.type == 'radio' || el.type == 'checkbox') && !el.checked) ? null : el.value;
        $splat(value).each(function(val){
          if (typeof val != 'undefined') queryString.push(el.name + '=' + encodeURIComponent(val));
        });
      });
      return queryString.join('&');
    },

    clone: function(contents, keepid){
      contents = contents !== false;
      var clone = this.cloneNode(contents);
      var clean = function(node, element){
        if (!keepid) node.removeAttribute('id');
        if (Browser.Engine.trident){
          node.clearAttributes();
          node.mergeAttributes(element);
          node.removeAttribute('uid');
          if (node.options){
            var no = node.options, eo = element.options;
            for (var j = no.length; j--;) no[j].selected = eo[j].selected;
          }
        }
        var prop = props[element.tagName.toLowerCase()];
        if (prop && element[prop]) node[prop] = element[prop];
      };

      if (contents){
        var ce = clone.getElementsByTagName('*'), te = this.getElementsByTagName('*');
        for (var i = ce.length; i--;) clean(ce[i], te[i]);
      }

      clean(clone, this);
      return $(clone);
    },

    destroy: function(){
      Element.empty(this);
      Element.dispose(this);
      clean(this, true);
      return null;
    },

    empty: function(){
      $A(this.childNodes).each(function(node){
        Element.destroy(node);
      });
      return this;
    },

    dispose: function(){
      return (this.parentNode) ? this.parentNode.removeChild(this) : this;
    },

    hasChild: function(el){
      el = $(el, true);
      if (!el) return false;
      if (Browser.Engine.webkit && Browser.Engine.version < 420) return $A(this.getElementsByTagName(el.tagName)).contains(el);
      return (this.contains) ? (this != el && this.contains(el)) : !!(this.compareDocumentPosition(el) & 16);
    },

    match: function(tag){
      return (!tag || (tag == this) || (Element.get(this, 'tag') == tag));
    }

  });

  Native.implement([Element, Window, Document], {

    addListener: function(type, fn){
      if (type == 'unload'){
        var old = fn, self = this;
        fn = function(){
          self.removeListener('unload', fn);
          old();
        };
      } else {
        collected[this.uid] = this;
      }
      if (this.addEventListener) this.addEventListener(type, fn, false);
      else this.attachEvent('on' + type, fn);
      return this;
    },

    removeListener: function(type, fn){
      if (this.removeEventListener) this.removeEventListener(type, fn, false);
      else this.detachEvent('on' + type, fn);
      return this;
    },

    retrieve: function(property, dflt){
      var storage = get(this.uid), prop = storage[property];
      if (dflt != undefined && prop == undefined) prop = storage[property] = dflt;
      return $pick(prop);
    },

    store: function(property, value){
      var storage = get(this.uid);
      storage[property] = value;
      return this;
    },

    eliminate: function(property){
      var storage = get(this.uid);
      delete storage[property];
      return this;
    }

  });

  window.addListener('unload', purge);

  })();

  Element.Properties = new Hash;

  Element.Properties.style = {

    set: function(style){
      this.style.cssText = style;
    },

    get: function(){
      return this.style.cssText;
    },

    erase: function(){
      this.style.cssText = '';
    }

  };

  Element.Properties.tag = {

    get: function(){
      return this.tagName.toLowerCase();
    }

  };

  Element.Properties.html = (function(){
    var wrapper = document.createElement('div');

    var translations = {
      table: [1, '<table>', '</table>'],
      select: [1, '<select>', '</select>'],
      tbody: [2, '<table><tbody>', '</tbody></table>'],
      tr: [3, '<table><tbody><tr>', '</tr></tbody></table>']
    };
    translations.thead = translations.tfoot = translations.tbody;

    var html = {
      set: function(){
        var html = Array.flatten(arguments).join('');
        var wrap = Browser.Engine.trident && translations[this.get('tag')];
        if (wrap){
          var first = wrapper;
          first.innerHTML = wrap[1] + html + wrap[2];
          for (var i = wrap[0]; i--;) first = first.firstChild;
          this.empty().adopt(first.childNodes);
        } else {
          this.innerHTML = html;
        }
      }
    };

    html.erase = html.set;

    return html;
  })();

  if (Browser.Engine.webkit && Browser.Engine.version < 420) Element.Properties.text = {
    get: function(){
      if (this.innerText) return this.innerText;
      var temp = this.ownerDocument.newElement('div', {html: this.innerHTML}).inject(this.ownerDocument.body);
      var text = temp.innerText;
      temp.destroy();
      return text;
    }
  };


  /*
  Script: Element.Event.js
    Contains Element methods for dealing with events, and custom Events.

  License:
    MIT-style license.
  */

  Element.Properties.events = {set: function(events){
    this.addEvents(events);
  }};

  Native.implement([Element, Window, Document], {

    addEvent: function(type, fn){
      var events = this.retrieve('events', {});
      events[type] = events[type] || {'keys': [], 'values': []};
      if (events[type].keys.contains(fn)) return this;
      events[type].keys.push(fn);
      var realType = type, custom = Element.Events.get(type), condition = fn, self = this;
      if (custom){
        if (custom.onAdd) custom.onAdd.call(this, fn);
        if (custom.condition){
          condition = function(event){
            if (custom.condition.call(this, event)) return fn.call(this, event);
            return true;
          };
        }
        realType = custom.base || realType;
      }
      var defn = function(){
        return fn.call(self);
      };
      var nativeEvent = Element.NativeEvents[realType];
      if (nativeEvent){
        if (nativeEvent == 2){
          defn = function(event){
            event = new Event(event, self.getWindow());
            if (condition.call(self, event) === false) event.stop();
          };
        }
        this.addListener(realType, defn);
      }
      events[type].values.push(defn);
      return this;
    },

    removeEvent: function(type, fn){
      var events = this.retrieve('events');
      if (!events || !events[type]) return this;
      var pos = events[type].keys.indexOf(fn);
      if (pos == -1) return this;
      events[type].keys.splice(pos, 1);
      var value = events[type].values.splice(pos, 1)[0];
      var custom = Element.Events.get(type);
      if (custom){
        if (custom.onRemove) custom.onRemove.call(this, fn);
        type = custom.base || type;
      }
      return (Element.NativeEvents[type]) ? this.removeListener(type, value) : this;
    },

    addEvents: function(events){
      for (var event in events) this.addEvent(event, events[event]);
      return this;
    },

    removeEvents: function(events){
      if ($type(events) == 'object'){
        for (var type in events) this.removeEvent(type, events[type]);
        return this;
      }
      var attached = this.retrieve('events');
      if (!attached) return this;
      if (!events){
        for (var type in attached) this.removeEvents(type);
        this.eliminate('events');
      } else if (attached[events]){
        while (attached[events].keys[0]) this.removeEvent(events, attached[events].keys[0]);
        attached[events] = null;
      }
      return this;
    },

    fireEvent: function(type, args, delay){
      var events = this.retrieve('events');
      if (!events || !events[type]) return this;
      events[type].keys.each(function(fn){
        fn.create({'bind': this, 'delay': delay, 'arguments': args})();
      }, this);
      return this;
    },

    cloneEvents: function(from, type){
      from = $(from);
      var fevents = from.retrieve('events');
      if (!fevents) return this;
      if (!type){
        for (var evType in fevents) this.cloneEvents(from, evType);
      } else if (fevents[type]){
        fevents[type].keys.each(function(fn){
          this.addEvent(type, fn);
        }, this);
      }
      return this;
    }

  });

  Element.NativeEvents = {
    click: 2, dblclick: 2, mouseup: 2, mousedown: 2, contextmenu: 2, //mouse buttons
    mousewheel: 2, DOMMouseScroll: 2, //mouse wheel
    mouseover: 2, mouseout: 2, mousemove: 2, selectstart: 2, selectend: 2, //mouse movement
    keydown: 2, keypress: 2, keyup: 2, //keyboard
    focus: 2, blur: 2, change: 2, reset: 2, select: 2, submit: 2, //form elements
    load: 1, unload: 1, beforeunload: 2, resize: 1, move: 1, DOMContentLoaded: 1, readystatechange: 1, //window
    error: 1, abort: 1, scroll: 1 //misc
  };

  (function(){

  var $check = function(event){
    var related = event.relatedTarget;
    if (related == undefined) return true;
    if (related === false) return false;
    return ($type(this) != 'document' && related != this && related.prefix != 'xul' && !this.hasChild(related));
  };

  Element.Events = new Hash({

    mouseenter: {
      base: 'mouseover',
      condition: $check
    },

    mouseleave: {
      base: 'mouseout',
      condition: $check
    },

    mousewheel: {
      base: (Browser.Engine.gecko) ? 'DOMMouseScroll' : 'mousewheel'
    }

  });

  })();


  /*
  Script: Element.Style.js
    Contains methods for interacting with the styles of Elements in a fashionable way.

  License:
    MIT-style license.
  */

  Element.Properties.styles = {set: function(styles){
    this.setStyles(styles);
  }};

  Element.Properties.opacity = {

    set: function(opacity, novisibility){
      if (!novisibility){
        if (opacity == 0){
          if (this.style.visibility != 'hidden') this.style.visibility = 'hidden';
        } else {
          if (this.style.visibility != 'visible') this.style.visibility = 'visible';
        }
      }
      if (!this.currentStyle || !this.currentStyle.hasLayout) this.style.zoom = 1;
      if (Browser.Engine.trident) this.style.filter = (opacity == 1) ? '' : 'alpha(opacity=' + opacity * 100 + ')';
      this.style.opacity = opacity;
      this.store('opacity', opacity);
    },

    get: function(){
      return this.retrieve('opacity', 1);
    }

  };

  Element.implement({

    setOpacity: function(value){
      return this.set('opacity', value, true);
    },

    getOpacity: function(){
      return this.get('opacity');
    },

    setStyle: function(property, value){
      switch (property){
        case 'opacity': return this.set('opacity', parseFloat(value));
        case 'float': property = (Browser.Engine.trident) ? 'styleFloat' : 'cssFloat';
      }
      property = property.camelCase();
      if ($type(value) != 'string'){
        var map = (Element.Styles.get(property) || '@').split(' ');
        value = $splat(value).map(function(val, i){
          if (!map[i]) return '';
          return ($type(val) == 'number') ? map[i].replace('@', Math.round(val)) : val;
        }).join(' ');
      } else if (value == String(Number(value))){
        value = Math.round(value);
      }
      this.style[property] = value;
      return this;
    },

    getStyle: function(property){
      switch (property){
        case 'opacity': return this.get('opacity');
        case 'float': property = (Browser.Engine.trident) ? 'styleFloat' : 'cssFloat';
      }
      property = property.camelCase();
      var result = this.style[property];
      if (!$chk(result)){
        result = [];
        for (var style in Element.ShortStyles){
          if (property != style) continue;
          for (var s in Element.ShortStyles[style]) result.push(this.getStyle(s));
          return result.join(' ');
        }
        result = this.getComputedStyle(property);
      }
      if (result){
        result = String(result);
        var color = result.match(/rgba?\([\d\s,]+\)/);
        if (color) result = result.replace(color[0], color[0].rgbToHex());
      }
      if (Browser.Engine.presto || (Browser.Engine.trident && !$chk(parseInt(result)))){
        if (property.test(/^(height|width)$/)){
          var values = (property == 'width') ? ['left', 'right'] : ['top', 'bottom'], size = 0;
          values.each(function(value){
            size += this.getStyle('border-' + value + '-width').toInt() + this.getStyle('padding-' + value).toInt();
          }, this);
          return this['offset' + property.capitalize()] - size + 'px';
        }
        if ((Browser.Engine.presto) && String(result).test('px')) return result;
        if (property.test(/(border(.+)Width|margin|padding)/)) return '0px';
      }
      return result;
    },

    setStyles: function(styles){
      for (var style in styles) this.setStyle(style, styles[style]);
      return this;
    },

    getStyles: function(){
      var result = {};
      Array.each(arguments, function(key){
        result[key] = this.getStyle(key);
      }, this);
      return result;
    }

  });

  Element.Styles = new Hash({
    left: '@px', top: '@px', bottom: '@px', right: '@px',
    width: '@px', height: '@px', maxWidth: '@px', maxHeight: '@px', minWidth: '@px', minHeight: '@px',
    backgroundColor: 'rgb(@, @, @)', backgroundPosition: '@px @px', color: 'rgb(@, @, @)',
    fontSize: '@px', letterSpacing: '@px', lineHeight: '@px', clip: 'rect(@px @px @px @px)',
    margin: '@px @px @px @px', padding: '@px @px @px @px', border: '@px @ rgb(@, @, @) @px @ rgb(@, @, @) @px @ rgb(@, @, @)',
    borderWidth: '@px @px @px @px', borderStyle: '@ @ @ @', borderColor: 'rgb(@, @, @) rgb(@, @, @) rgb(@, @, @) rgb(@, @, @)',
    zIndex: '@', 'zoom': '@', fontWeight: '@', textIndent: '@px', opacity: '@'
  });

  Element.ShortStyles = {margin: {}, padding: {}, border: {}, borderWidth: {}, borderStyle: {}, borderColor: {}};

  ['Top', 'Right', 'Bottom', 'Left'].each(function(direction){
    var Short = Element.ShortStyles;
    var All = Element.Styles;
    ['margin', 'padding'].each(function(style){
      var sd = style + direction;
      Short[style][sd] = All[sd] = '@px';
    });
    var bd = 'border' + direction;
    Short.border[bd] = All[bd] = '@px @ rgb(@, @, @)';
    var bdw = bd + 'Width', bds = bd + 'Style', bdc = bd + 'Color';
    Short[bd] = {};
    Short.borderWidth[bdw] = Short[bd][bdw] = All[bdw] = '@px';
    Short.borderStyle[bds] = Short[bd][bds] = All[bds] = '@';
    Short.borderColor[bdc] = Short[bd][bdc] = All[bdc] = 'rgb(@, @, @)';
  });


  /*
  Script: Element.Dimensions.js
    Contains methods to work with size, scroll, or positioning of Elements and the window object.

  License:
    MIT-style license.

  Credits:
    - Element positioning based on the [qooxdoo](http://qooxdoo.org/) code and smart browser fixes, [LGPL License](http://www.gnu.org/licenses/lgpl.html).
    - Viewport dimensions based on [YUI](http://developer.yahoo.com/yui/) code, [BSD License](http://developer.yahoo.com/yui/license.html).
  */

  (function(){

  Element.implement({

    scrollTo: function(x, y){
      if (isBody(this)){
        this.getWindow().scrollTo(x, y);
      } else {
        this.scrollLeft = x;
        this.scrollTop = y;
      }
      return this;
    },

    getSize: function(){
      if (isBody(this)) return this.getWindow().getSize();
      return {x: this.offsetWidth, y: this.offsetHeight};
    },

    getScrollSize: function(){
      if (isBody(this)) return this.getWindow().getScrollSize();
      return {x: this.scrollWidth, y: this.scrollHeight};
    },

    getScroll: function(){
      if (isBody(this)) return this.getWindow().getScroll();
      return {x: this.scrollLeft, y: this.scrollTop};
    },

    getScrolls: function(){
      var element = this, position = {x: 0, y: 0};
      while (element && !isBody(element)){
        position.x += element.scrollLeft;
        position.y += element.scrollTop;
        element = element.parentNode;
      }
      return position;
    },

    getOffsetParent: function(){
      var element = this;
      if (isBody(element)) return null;
      if (!Browser.Engine.trident) return element.offsetParent;
      while ((element = element.parentNode) && !isBody(element)){
        if (styleString(element, 'position') != 'static') return element;
      }
      return null;
    },

    getOffsets: function(){
      if (Browser.Engine.trident){
        var bound = this.getBoundingClientRect(), html = this.getDocument().documentElement;
        return {
          x: bound.left + html.scrollLeft - html.clientLeft,
          y: bound.top + html.scrollTop - html.clientTop
        };
      }

      var element = this, position = {x: 0, y: 0};
      if (isBody(this)) return position;

      while (element && !isBody(element)){
        position.x += element.offsetLeft;
        position.y += element.offsetTop;

        if (Browser.Engine.gecko){
          if (!borderBox(element)){
            position.x += leftBorder(element);
            position.y += topBorder(element);
          }
          var parent = element.parentNode;
          if (parent && styleString(parent, 'overflow') != 'visible'){
            position.x += leftBorder(parent);
            position.y += topBorder(parent);
          }
        } else if (element != this && Browser.Engine.webkit){
          position.x += leftBorder(element);
          position.y += topBorder(element);
        }

        element = element.offsetParent;
      }
      if (Browser.Engine.gecko && !borderBox(this)){
        position.x -= leftBorder(this);
        position.y -= topBorder(this);
      }
      return position;
    },

    getPosition: function(relative){
      if (isBody(this)) return {x: 0, y: 0};
      var offset = this.getOffsets(), scroll = this.getScrolls();
      var position = {x: offset.x - scroll.x, y: offset.y - scroll.y};
      var relativePosition = (relative && (relative = $(relative))) ? relative.getPosition() : {x: 0, y: 0};
      return {x: position.x - relativePosition.x, y: position.y - relativePosition.y};
    },

    getCoordinates: function(element){
      if (isBody(this)) return this.getWindow().getCoordinates();
      var position = this.getPosition(element), size = this.getSize();
      var obj = {left: position.x, top: position.y, width: size.x, height: size.y};
      obj.right = obj.left + obj.width;
      obj.bottom = obj.top + obj.height;
      return obj;
    },

    computePosition: function(obj){
      return {left: obj.x - styleNumber(this, 'margin-left'), top: obj.y - styleNumber(this, 'margin-top')};
    },

    position: function(obj){
      return this.setStyles(this.computePosition(obj));
    }

  });

  Native.implement([Document, Window], {

    getSize: function(){
      var win = this.getWindow();
      if (Browser.Engine.presto || Browser.Engine.webkit) return {x: win.innerWidth, y: win.innerHeight};
      var doc = getCompatElement(this);
      return {x: doc.clientWidth, y: doc.clientHeight};
    },

    getScroll: function(){
      var win = this.getWindow();
      var doc = getCompatElement(this);
      return {x: win.pageXOffset || doc.scrollLeft, y: win.pageYOffset || doc.scrollTop};
    },

    getScrollSize: function(){
      var doc = getCompatElement(this);
      var min = this.getSize();
      return {x: Math.max(doc.scrollWidth, min.x), y: Math.max(doc.scrollHeight, min.y)};
    },

    getPosition: function(){
      return {x: 0, y: 0};
    },

    getCoordinates: function(){
      var size = this.getSize();
      return {top: 0, left: 0, bottom: size.y, right: size.x, height: size.y, width: size.x};
    }

  });

  // private methods

  var styleString = Element.getComputedStyle;

  function styleNumber(element, style){
    return styleString(element, style).toInt() || 0;
  };

  function borderBox(element){
    return styleString(element, '-moz-box-sizing') == 'border-box';
  };

  function topBorder(element){
    return styleNumber(element, 'border-top-width');
  };

  function leftBorder(element){
    return styleNumber(element, 'border-left-width');
  };

  function isBody(element){
    return (/^(?:body|html)$/i).test(element.tagName);
  };

  function getCompatElement(element){
    var doc = element.getDocument();
    return (!doc.compatMode || doc.compatMode == 'CSS1Compat') ? doc.html : doc.body;
  };

  })();

  //aliases

  Native.implement([Window, Document, Element], {

    getHeight: function(){
      return this.getSize().y;
    },

    getWidth: function(){
      return this.getSize().x;
    },

    getScrollTop: function(){
      return this.getScroll().y;
    },

    getScrollLeft: function(){
      return this.getScroll().x;
    },

    getScrollHeight: function(){
      return this.getScrollSize().y;
    },

    getScrollWidth: function(){
      return this.getScrollSize().x;
    },

    getTop: function(){
      return this.getPosition().y;
    },

    getLeft: function(){
      return this.getPosition().x;
    }

  });


  /*
  Script: Selectors.js
    Adds advanced CSS Querying capabilities for targeting elements. Also includes pseudoselectors support.

  License:
    MIT-style license.
  */

  Native.implement([Document, Element], {

    getElements: function(expression, nocash){
      expression = expression.split(',');
      var items, local = {};
      for (var i = 0, l = expression.length; i < l; i++){
        var selector = expression[i], elements = Selectors.Utils.search(this, selector, local);
        if (i != 0 && elements.item) elements = $A(elements);
        items = (i == 0) ? elements : (items.item) ? $A(items).concat(elements) : items.concat(elements);
      }
      return new Elements(items, {ddup: (expression.length > 1), cash: !nocash});
    }

  });

  Element.implement({

    match: function(selector){
      if (!selector || (selector == this)) return true;
      var tagid = Selectors.Utils.parseTagAndID(selector);
      var tag = tagid[0], id = tagid[1];
      if (!Selectors.Filters.byID(this, id) || !Selectors.Filters.byTag(this, tag)) return false;
      var parsed = Selectors.Utils.parseSelector(selector);
      return (parsed) ? Selectors.Utils.filter(this, parsed, {}) : true;
    }

  });

  var Selectors = {Cache: {nth: {}, parsed: {}}};

  Selectors.RegExps = {
    id: (/#([\w-]+)/),
    tag: (/^(\w+|\*)/),
    quick: (/^(\w+|\*)$/),
    splitter: (/\s*([+>~\s])\s*([a-zA-Z#.*:\[])/g),
    combined: (/\.([\w-]+)|\[(\w+)(?:([!*^$~|]?=)(["']?)([^\4]*?)\4)?\]|:([\w-]+)(?:\(["']?(.*?)?["']?\)|$)/g)
  };

  Selectors.Utils = {

    chk: function(item, uniques){
      if (!uniques) return true;
      var uid = $uid(item);
      if (!uniques[uid]) return uniques[uid] = true;
      return false;
    },

    parseNthArgument: function(argument){
      if (Selectors.Cache.nth[argument]) return Selectors.Cache.nth[argument];
      var parsed = argument.match(/^([+-]?\d*)?([a-z]+)?([+-]?\d*)?$/);
      if (!parsed) return false;
      var inta = parseInt(parsed[1]);
      var a = (inta || inta === 0) ? inta : 1;
      var special = parsed[2] || false;
      var b = parseInt(parsed[3]) || 0;
      if (a != 0){
        b--;
        while (b < 1) b += a;
        while (b >= a) b -= a;
      } else {
        a = b;
        special = 'index';
      }
      switch (special){
        case 'n': parsed = {a: a, b: b, special: 'n'}; break;
        case 'odd': parsed = {a: 2, b: 0, special: 'n'}; break;
        case 'even': parsed = {a: 2, b: 1, special: 'n'}; break;
        case 'first': parsed = {a: 0, special: 'index'}; break;
        case 'last': parsed = {special: 'last-child'}; break;
        case 'only': parsed = {special: 'only-child'}; break;
        default: parsed = {a: (a - 1), special: 'index'};
      }

      return Selectors.Cache.nth[argument] = parsed;
    },

    parseSelector: function(selector){
      if (Selectors.Cache.parsed[selector]) return Selectors.Cache.parsed[selector];
      var m, parsed = {classes: [], pseudos: [], attributes: []};
      while ((m = Selectors.RegExps.combined.exec(selector))){
        var cn = m[1], an = m[2], ao = m[3], av = m[5], pn = m[6], pa = m[7];
        if (cn){
          parsed.classes.push(cn);
        } else if (pn){
          var parser = Selectors.Pseudo.get(pn);
          if (parser) parsed.pseudos.push({parser: parser, argument: pa});
          else parsed.attributes.push({name: pn, operator: '=', value: pa});
        } else if (an){
          parsed.attributes.push({name: an, operator: ao, value: av});
        }
      }
      if (!parsed.classes.length) delete parsed.classes;
      if (!parsed.attributes.length) delete parsed.attributes;
      if (!parsed.pseudos.length) delete parsed.pseudos;
      if (!parsed.classes && !parsed.attributes && !parsed.pseudos) parsed = null;
      return Selectors.Cache.parsed[selector] = parsed;
    },

    parseTagAndID: function(selector){
      var tag = selector.match(Selectors.RegExps.tag);
      var id = selector.match(Selectors.RegExps.id);
      return [(tag) ? tag[1] : '*', (id) ? id[1] : false];
    },

    filter: function(item, parsed, local){
      var i;
      if (parsed.classes){
        for (i = parsed.classes.length; i--; i){
          var cn = parsed.classes[i];
          if (!Selectors.Filters.byClass(item, cn)) return false;
        }
      }
      if (parsed.attributes){
        for (i = parsed.attributes.length; i--; i){
          var att = parsed.attributes[i];
          if (!Selectors.Filters.byAttribute(item, att.name, att.operator, att.value)) return false;
        }
      }
      if (parsed.pseudos){
        for (i = parsed.pseudos.length; i--; i){
          var psd = parsed.pseudos[i];
          if (!Selectors.Filters.byPseudo(item, psd.parser, psd.argument, local)) return false;
        }
      }
      return true;
    },

    getByTagAndID: function(ctx, tag, id){
      if (id){
        var item = (ctx.getElementById) ? ctx.getElementById(id, true) : Element.getElementById(ctx, id, true);
        return (item && Selectors.Filters.byTag(item, tag)) ? [item] : [];
      } else {
        return ctx.getElementsByTagName(tag);
      }
    },

    search: function(self, expression, local){
      var splitters = [];

      var selectors = expression.trim().replace(Selectors.RegExps.splitter, function(m0, m1, m2){
        splitters.push(m1);
        return ':)' + m2;
      }).split(':)');

      var items, filtered, item;

      for (var i = 0, l = selectors.length; i < l; i++){

        var selector = selectors[i];

        if (i == 0 && Selectors.RegExps.quick.test(selector)){
          items = self.getElementsByTagName(selector);
          continue;
        }

        var splitter = splitters[i - 1];

        var tagid = Selectors.Utils.parseTagAndID(selector);
        var tag = tagid[0], id = tagid[1];

        if (i == 0){
          items = Selectors.Utils.getByTagAndID(self, tag, id);
        } else {
          var uniques = {}, found = [];
          for (var j = 0, k = items.length; j < k; j++) found = Selectors.Getters[splitter](found, items[j], tag, id, uniques);
          items = found;
        }

        var parsed = Selectors.Utils.parseSelector(selector);

        if (parsed){
          filtered = [];
          for (var m = 0, n = items.length; m < n; m++){
            item = items[m];
            if (Selectors.Utils.filter(item, parsed, local)) filtered.push(item);
          }
          items = filtered;
        }

      }

      return items;

    }

  };

  Selectors.Getters = {

    ' ': function(found, self, tag, id, uniques){
      var items = Selectors.Utils.getByTagAndID(self, tag, id);
      for (var i = 0, l = items.length; i < l; i++){
        var item = items[i];
        if (Selectors.Utils.chk(item, uniques)) found.push(item);
      }
      return found;
    },

    '>': function(found, self, tag, id, uniques){
      var children = Selectors.Utils.getByTagAndID(self, tag, id);
      for (var i = 0, l = children.length; i < l; i++){
        var child = children[i];
        if (child.parentNode == self && Selectors.Utils.chk(child, uniques)) found.push(child);
      }
      return found;
    },

    '+': function(found, self, tag, id, uniques){
      while ((self = self.nextSibling)){
        if (self.nodeType == 1){
          if (Selectors.Utils.chk(self, uniques) && Selectors.Filters.byTag(self, tag) && Selectors.Filters.byID(self, id)) found.push(self);
          break;
        }
      }
      return found;
    },

    '~': function(found, self, tag, id, uniques){
      while ((self = self.nextSibling)){
        if (self.nodeType == 1){
          if (!Selectors.Utils.chk(self, uniques)) break;
          if (Selectors.Filters.byTag(self, tag) && Selectors.Filters.byID(self, id)) found.push(self);
        }
      }
      return found;
    }

  };

  Selectors.Filters = {

    byTag: function(self, tag){
      return (tag == '*' || (self.tagName && self.tagName.toLowerCase() == tag));
    },

    byID: function(self, id){
      return (!id || (self.id && self.id == id));
    },

    byClass: function(self, klass){
      return (self.className && self.className.contains(klass, ' '));
    },

    byPseudo: function(self, parser, argument, local){
      return parser.call(self, argument, local);
    },

    byAttribute: function(self, name, operator, value){
      var result = Element.prototype.getProperty.call(self, name);
      if (!result) return (operator == '!=');
      if (!operator || value == undefined) return true;
      switch (operator){
        case '=': return (result == value);
        case '*=': return (result.contains(value));
        case '^=': return (result.substr(0, value.length) == value);
        case '$=': return (result.substr(result.length - value.length) == value);
        case '!=': return (result != value);
        case '~=': return result.contains(value, ' ');
        case '|=': return result.contains(value, '-');
      }
      return false;
    }

  };

  Selectors.Pseudo = new Hash({

    // w3c pseudo selectors

    checked: function(){
      return this.checked;
    },

    empty: function(){
      return !(this.innerText || this.textContent || '').length;
    },

    not: function(selector){
      return !Element.match(this, selector);
    },

    contains: function(text){
      return (this.innerText || this.textContent || '').contains(text);
    },

    'first-child': function(){
      return Selectors.Pseudo.index.call(this, 0);
    },

    'last-child': function(){
      var element = this;
      while ((element = element.nextSibling)){
        if (element.nodeType == 1) return false;
      }
      return true;
    },

    'only-child': function(){
      var prev = this;
      while ((prev = prev.previousSibling)){
        if (prev.nodeType == 1) return false;
      }
      var next = this;
      while ((next = next.nextSibling)){
        if (next.nodeType == 1) return false;
      }
      return true;
    },

    'nth-child': function(argument, local){
      argument = (argument == undefined) ? 'n' : argument;
      var parsed = Selectors.Utils.parseNthArgument(argument);
      if (parsed.special != 'n') return Selectors.Pseudo[parsed.special].call(this, parsed.a, local);
      var count = 0;
      local.positions = local.positions || {};
      var uid = $uid(this);
      if (!local.positions[uid]){
        var self = this;
        while ((self = self.previousSibling)){
          if (self.nodeType != 1) continue;
          count ++;
          var position = local.positions[$uid(self)];
          if (position != undefined){
            count = position + count;
            break;
          }
        }
        local.positions[uid] = count;
      }
      return (local.positions[uid] % parsed.a == parsed.b);
    },

    // custom pseudo selectors

    index: function(index){
      var element = this, count = 0;
      while ((element = element.previousSibling)){
        if (element.nodeType == 1 && ++count > index) return false;
      }
      return (count == index);
    },

    even: function(argument, local){
      return Selectors.Pseudo['nth-child'].call(this, '2n+1', local);
    },

    odd: function(argument, local){
      return Selectors.Pseudo['nth-child'].call(this, '2n', local);
    }

  });


  /*
  Script: Domready.js
    Contains the domready custom event.

  License:
    MIT-style license.
  */

  Element.Events.domready = {

    onAdd: function(fn){
      if (Browser.loaded) fn.call(this);
    }

  };

  (function(){

    var domready = function(){
      if (Browser.loaded) return;
      Browser.loaded = true;
      window.fireEvent('domready');
      document.fireEvent('domready');
    };

    if (Browser.Engine.trident){
      var temp = document.createElement('div');
      (function(){
        ($try(function(){
          temp.doScroll('left');
          return $(temp).inject(document.body).set('html', 'temp').dispose();
        })) ? domready() : arguments.callee.delay(50);
      })();
    } else if (Browser.Engine.webkit && Browser.Engine.version < 525){
      (function(){
        (['loaded', 'complete'].contains(document.readyState)) ? domready() : arguments.callee.delay(50);
      })();
    } else {
      window.addEvent('load', domready);
      document.addEvent('DOMContentLoaded', domready);
    }

  })();


  /*
  Script: JSON.js
    JSON encoder and decoder.

  License:
    MIT-style license.

  See Also:
    <http://www.json.org/>
  */

  var JSON = new Hash({

    $specialChars: {'\b': '\\b', '\t': '\\t', '\n': '\\n', '\f': '\\f', '\r': '\\r', '"' : '\\"', '\\': '\\\\'},

    $replaceChars: function(chr){
      return JSON.$specialChars[chr] || '\\u00' + Math.floor(chr.charCodeAt() / 16).toString(16) + (chr.charCodeAt() % 16).toString(16);
    },

    encode: function(obj){
      switch ($type(obj)){
        case 'string':
          return '"' + obj.replace(/[\x00-\x1f\\"]/g, JSON.$replaceChars) + '"';
        case 'array':
          return '[' + String(obj.map(JSON.encode).filter($defined)) + ']';
        case 'object': case 'hash':
          var string = [];
          Hash.each(obj, function(value, key){
            var json = JSON.encode(value);
            if (json) string.push(JSON.encode(key) + ':' + json);
          });
          return '{' + string + '}';
        case 'number': case 'boolean': return String(obj);
        case false: return 'null';
      }
      return null;
    },

    decode: function(string, secure){
      if ($type(string) != 'string' || !string.length) return null;
      if (secure && !(/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(string.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, ''))) return null;
      return eval('(' + string + ')');
    }

  });

  Native.implement([Hash, Array, String, Number], {

    toJSON: function(){
      return JSON.encode(this);
    }

  });


  /*
  Script: Cookie.js
    Class for creating, loading, and saving browser Cookies.

  License:
    MIT-style license.

  Credits:
    Based on the functions by Peter-Paul Koch (http://quirksmode.org).
  */

  var Cookie = new Class({

    Implements: Options,

    options: {
      path: false,
      domain: false,
      duration: false,
      secure: false,
      document: document
    },

    initialize: function(key, options){
      this.key = key;
      this.setOptions(options);
    },

    write: function(value){
      value = encodeURIComponent(value);
      if (this.options.domain) value += '; domain=' + this.options.domain;
      if (this.options.path) value += '; path=' + this.options.path;
      if (this.options.duration){
        var date = new Date();
        date.setTime(date.getTime() + this.options.duration * 24 * 60 * 60 * 1000);
        value += '; expires=' + date.toGMTString();
      }
      if (this.options.secure) value += '; secure';
      this.options.document.cookie = this.key + '=' + value;
      return this;
    },

    read: function(){
      var value = this.options.document.cookie.match('(?:^|;)\\s*' + this.key.escapeRegExp() + '=([^;]*)');
      return (value) ? decodeURIComponent(value[1]) : null;
    },

    dispose: function(){
      new Cookie(this.key, $merge(this.options, {duration: -1})).write('');
      return this;
    }

  });

  Cookie.write = function(key, value, options){
    return new Cookie(key, options).write(value);
  };

  Cookie.read = function(key){
    return new Cookie(key).read();
  };

  Cookie.dispose = function(key, options){
    return new Cookie(key, options).dispose();
  };


  /*
  Script: Swiff.js
    Wrapper for embedding SWF movies. Supports (and fixes) External Interface Communication.

  License:
    MIT-style license.

  Credits:
    Flash detection & Internet Explorer + Flash Player 9 fix inspired by SWFObject.
  */

  var Swiff = new Class({

    Implements: [Options],

    options: {
      id: null,
      height: 1,
      width: 1,
      container: null,
      properties: {},
      params: {
        quality: 'high',
        allowScriptAccess: 'always',
        wMode: 'transparent',
        swLiveConnect: true
      },
      callBacks: {},
      vars: {}
    },

    toElement: function(){
      return this.object;
    },

    initialize: function(path, options){
      this.instance = 'Swiff_' + $time();

      this.setOptions(options);
      options = this.options;
      var id = this.id = options.id || this.instance;
      var container = $(options.container);

      Swiff.CallBacks[this.instance] = {};

      var params = options.params, vars = options.vars, callBacks = options.callBacks;
      var properties = $extend({height: options.height, width: options.width}, options.properties);

      var self = this;

      for (var callBack in callBacks){
        Swiff.CallBacks[this.instance][callBack] = (function(option){
          return function(){
            return option.apply(self.object, arguments);
          };
        })(callBacks[callBack]);
        vars[callBack] = 'Swiff.CallBacks.' + this.instance + '.' + callBack;
      }

      params.flashVars = Hash.toQueryString(vars);
      if (Browser.Engine.trident){
        properties.classid = 'clsid:D27CDB6E-AE6D-11cf-96B8-444553540000';
        params.movie = path;
      } else {
        properties.type = 'application/x-shockwave-flash';
        properties.data = path;
      }
      var build = '<object id="' + id + '"';
      for (var property in properties) build += ' ' + property + '="' + properties[property] + '"';
      build += '>';
      for (var param in params){
        if (params[param]) build += '<param name="' + param + '" value="' + params[param] + '" />';
      }
      build += '</object>';
      this.object = ((container) ? container.empty() : new Element('div')).set('html', build).firstChild;
    },

    replaces: function(element){
      element = $(element, true);
      element.parentNode.replaceChild(this.toElement(), element);
      return this;
    },

    inject: function(element){
      $(element, true).appendChild(this.toElement());
      return this;
    },

    remote: function(){
      return Swiff.remote.apply(Swiff, [this.toElement()].extend(arguments));
    }

  });

  Swiff.CallBacks = {};

  Swiff.remote = function(obj, fn){
    var rs = obj.CallFunction('<invoke name="' + fn + '" returntype="javascript">' + __flash__argumentsToXML(arguments, 2) + '</invoke>');
    return eval(rs);
  };


  /*
  Script: Fx.js
    Contains the basic animation logic to be extended by all other Fx Classes.

  License:
    MIT-style license.
  */

  var Fx = new Class({

    Implements: [Chain, Events, Options],

    options: {
      /*
      onStart: $empty,
      onCancel: $empty,
      onComplete: $empty,
      */
      fps: 50,
      unit: false,
      duration: 500,
      link: 'ignore'
    },

    initialize: function(options){
      this.subject = this.subject || this;
      this.setOptions(options);
      this.options.duration = Fx.Durations[this.options.duration] || this.options.duration.toInt();
      var wait = this.options.wait;
      if (wait === false) this.options.link = 'cancel';
    },

    getTransition: function(){
      return function(p){
        return -(Math.cos(Math.PI * p) - 1) / 2;
      };
    },

    step: function(){
      var time = $time();
      if (time < this.time + this.options.duration){
        var delta = this.transition((time - this.time) / this.options.duration);
        this.set(this.compute(this.from, this.to, delta));
      } else {
        this.set(this.compute(this.from, this.to, 1));
        this.complete();
      }
    },

    set: function(now){
      return now;
    },

    compute: function(from, to, delta){
      return Fx.compute(from, to, delta);
    },

    check: function(caller){
      if (!this.timer) return true;
      switch (this.options.link){
        case 'cancel': this.cancel(); return true;
        case 'chain': this.chain(caller.bind(this, Array.slice(arguments, 1))); return false;
      }
      return false;
    },

    start: function(from, to){
      if (!this.check(arguments.callee, from, to)) return this;
      this.from = from;
      this.to = to;
      this.time = 0;
      this.transition = this.getTransition();
      this.startTimer();
      this.onStart();
      return this;
    },

    complete: function(){
      if (this.stopTimer()) this.onComplete();
      return this;
    },

    cancel: function(){
      if (this.stopTimer()) this.onCancel();
      return this;
    },

    onStart: function(){
      this.fireEvent('start', this.subject);
    },

    onComplete: function(){
      this.fireEvent('complete', this.subject);
      if (!this.callChain()) this.fireEvent('chainComplete', this.subject);
    },

    onCancel: function(){
      this.fireEvent('cancel', this.subject).clearChain();
    },

    pause: function(){
      this.stopTimer();
      return this;
    },

    resume: function(){
      this.startTimer();
      return this;
    },

    stopTimer: function(){
      if (!this.timer) return false;
      this.time = $time() - this.time;
      this.timer = $clear(this.timer);
      return true;
    },

    startTimer: function(){
      if (this.timer) return false;
      this.time = $time() - this.time;
      this.timer = this.step.periodical(Math.round(1000 / this.options.fps), this);
      return true;
    }

  });

  Fx.compute = function(from, to, delta){
    return (to - from) * delta + from;
  };

  Fx.Durations = {'short': 250, 'normal': 500, 'long': 1000};


  /*
  Script: Fx.CSS.js
    Contains the CSS animation logic. Used by Fx.Tween, Fx.Morph, Fx.Elements.

  License:
    MIT-style license.
  */

  Fx.CSS = new Class({

    Extends: Fx,

    //prepares the base from/to object

    prepare: function(element, property, values){
      values = $splat(values);
      var values1 = values[1];
      if (!$chk(values1)){
        values[1] = values[0];
        values[0] = element.getStyle(property);
      }
      var parsed = values.map(this.parse);
      return {from: parsed[0], to: parsed[1]};
    },

    //parses a value into an array

    parse: function(value){
      value = $lambda(value)();
      value = (typeof value == 'string') ? value.split(' ') : $splat(value);
      return value.map(function(val){
        val = String(val);
        var found = false;
        Fx.CSS.Parsers.each(function(parser, key){
          if (found) return;
          var parsed = parser.parse(val);
          if ($chk(parsed)) found = {value: parsed, parser: parser};
        });
        found = found || {value: val, parser: Fx.CSS.Parsers.String};
        return found;
      });
    },

    //computes by a from and to prepared objects, using their parsers.

    compute: function(from, to, delta){
      var computed = [];
      (Math.min(from.length, to.length)).times(function(i){
        computed.push({value: from[i].parser.compute(from[i].value, to[i].value, delta), parser: from[i].parser});
      });
      computed.$family = {name: 'fx:css:value'};
      return computed;
    },

    //serves the value as settable

    serve: function(value, unit){
      if ($type(value) != 'fx:css:value') value = this.parse(value);
      var returned = [];
      value.each(function(bit){
        returned = returned.concat(bit.parser.serve(bit.value, unit));
      });
      return returned;
    },

    //renders the change to an element

    render: function(element, property, value, unit){
      element.setStyle(property, this.serve(value, unit));
    },

    //searches inside the page css to find the values for a selector

    search: function(selector){
      if (Fx.CSS.Cache[selector]) return Fx.CSS.Cache[selector];
      var to = {};
      Array.each(document.styleSheets, function(sheet, j){
        var href = sheet.href;
        if (href && href.contains('://') && !href.contains(document.domain)) return;
        var rules = sheet.rules || sheet.cssRules;
        Array.each(rules, function(rule, i){
          if (!rule.style) return;
          var selectorText = (rule.selectorText) ? rule.selectorText.replace(/^\w+/, function(m){
            return m.toLowerCase();
          }) : null;
          if (!selectorText || !selectorText.test('^' + selector + '$')) return;
          Element.Styles.each(function(value, style){
            if (!rule.style[style] || Element.ShortStyles[style]) return;
            value = String(rule.style[style]);
            to[style] = (value.test(/^rgb/)) ? value.rgbToHex() : value;
          });
        });
      });
      return Fx.CSS.Cache[selector] = to;
    }

  });

  Fx.CSS.Cache = {};

  Fx.CSS.Parsers = new Hash({

    Color: {
      parse: function(value){
        if (value.match(/^#[0-9a-f]{3,6}$/i)) return value.hexToRgb(true);
        return ((value = value.match(/(\d+),\s*(\d+),\s*(\d+)/))) ? [value[1], value[2], value[3]] : false;
      },
      compute: function(from, to, delta){
        return from.map(function(value, i){
          return Math.round(Fx.compute(from[i], to[i], delta));
        });
      },
      serve: function(value){
        return value.map(Number);
      }
    },

    Number: {
      parse: parseFloat,
      compute: Fx.compute,
      serve: function(value, unit){
        return (unit) ? value + unit : value;
      }
    },

    String: {
      parse: $lambda(false),
      compute: $arguments(1),
      serve: $arguments(0)
    }

  });


  /*
  Script: Fx.Tween.js
    Formerly Fx.Style, effect to transition any CSS property for an element.

  License:
    MIT-style license.
  */

  Fx.Tween = new Class({

    Extends: Fx.CSS,

    initialize: function(element, options){
      this.element = this.subject = $(element);
      this.parent(options);
    },

    set: function(property, now){
      if (arguments.length == 1){
        now = property;
        property = this.property || this.options.property;
      }
      this.render(this.element, property, now, this.options.unit);
      return this;
    },

    start: function(property, from, to){
      if (!this.check(arguments.callee, property, from, to)) return this;
      var args = Array.flatten(arguments);
      this.property = this.options.property || args.shift();
      var parsed = this.prepare(this.element, this.property, args);
      return this.parent(parsed.from, parsed.to);
    }

  });

  Element.Properties.tween = {

    set: function(options){
      var tween = this.retrieve('tween');
      if (tween) tween.cancel();
      return this.eliminate('tween').store('tween:options', $extend({link: 'cancel'}, options));
    },

    get: function(options){
      if (options || !this.retrieve('tween')){
        if (options || !this.retrieve('tween:options')) this.set('tween', options);
        this.store('tween', new Fx.Tween(this, this.retrieve('tween:options')));
      }
      return this.retrieve('tween');
    }

  };

  Element.implement({

    tween: function(property, from, to){
      this.get('tween').start(arguments);
      return this;
    },

    fade: function(how){
      var fade = this.get('tween'), o = 'opacity', toggle;
      how = $pick(how, 'toggle');
      switch (how){
        case 'in': fade.start(o, 1); break;
        case 'out': fade.start(o, 0); break;
        case 'show': fade.set(o, 1); break;
        case 'hide': fade.set(o, 0); break;
        case 'toggle':
          var flag = this.retrieve('fade:flag', this.get('opacity') == 1);
          fade.start(o, (flag) ? 0 : 1);
          this.store('fade:flag', !flag);
          toggle = true;
        break;
        default: fade.start(o, arguments);
      }
      if (!toggle) this.eliminate('fade:flag');
      return this;
    },

    highlight: function(start, end){
      if (!end){
        end = this.retrieve('highlight:original', this.getStyle('background-color'));
        end = (end == 'transparent') ? '#fff' : end;
      }
      var tween = this.get('tween');
      tween.start('background-color', start || '#ffff88', end).chain(function(){
        this.setStyle('background-color', this.retrieve('highlight:original'));
        tween.callChain();
      }.bind(this));
      return this;
    }

  });


  /*
  Script: Fx.Morph.js
    Formerly Fx.Styles, effect to transition any number of CSS properties for an element using an object of rules, or CSS based selector rules.

  License:
    MIT-style license.
  */

  Fx.Morph = new Class({

    Extends: Fx.CSS,

    initialize: function(element, options){
      this.element = this.subject = $(element);
      this.parent(options);
    },

    set: function(now){
      if (typeof now == 'string') now = this.search(now);
      for (var p in now) this.render(this.element, p, now[p], this.options.unit);
      return this;
    },

    compute: function(from, to, delta){
      var now = {};
      for (var p in from) now[p] = this.parent(from[p], to[p], delta);
      return now;
    },

    start: function(properties){
      if (!this.check(arguments.callee, properties)) return this;
      if (typeof properties == 'string') properties = this.search(properties);
      var from = {}, to = {};
      for (var p in properties){
        var parsed = this.prepare(this.element, p, properties[p]);
        from[p] = parsed.from;
        to[p] = parsed.to;
      }
      return this.parent(from, to);
    }

  });

  Element.Properties.morph = {

    set: function(options){
      var morph = this.retrieve('morph');
      if (morph) morph.cancel();
      return this.eliminate('morph').store('morph:options', $extend({link: 'cancel'}, options));
    },

    get: function(options){
      if (options || !this.retrieve('morph')){
        if (options || !this.retrieve('morph:options')) this.set('morph', options);
        this.store('morph', new Fx.Morph(this, this.retrieve('morph:options')));
      }
      return this.retrieve('morph');
    }

  };

  Element.implement({

    morph: function(props){
      this.get('morph').start(props);
      return this;
    }

  });


  /*
  Script: Fx.Transitions.js
    Contains a set of advanced transitions to be used with any of the Fx Classes.

  License:
    MIT-style license.

  Credits:
    Easing Equations by Robert Penner, <http://www.robertpenner.com/easing/>, modified and optimized to be used with MooTools.
  */

  Fx.implement({

    getTransition: function(){
      var trans = this.options.transition || Fx.Transitions.Sine.easeInOut;
      if (typeof trans == 'string'){
        var data = trans.split(':');
        trans = Fx.Transitions;
        trans = trans[data[0]] || trans[data[0].capitalize()];
        if (data[1]) trans = trans['ease' + data[1].capitalize() + (data[2] ? data[2].capitalize() : '')];
      }
      return trans;
    }

  });

  Fx.Transition = function(transition, params){
    params = $splat(params);
    return $extend(transition, {
      easeIn: function(pos){
        return transition(pos, params);
      },
      easeOut: function(pos){
        return 1 - transition(1 - pos, params);
      },
      easeInOut: function(pos){
        return (pos <= 0.5) ? transition(2 * pos, params) / 2 : (2 - transition(2 * (1 - pos), params)) / 2;
      }
    });
  };

  Fx.Transitions = new Hash({

    linear: $arguments(0)

  });

  Fx.Transitions.extend = function(transitions){
    for (var transition in transitions) Fx.Transitions[transition] = new Fx.Transition(transitions[transition]);
  };

  Fx.Transitions.extend({

    Pow: function(p, x){
      return Math.pow(p, x[0] || 6);
    },

    Expo: function(p){
      return Math.pow(2, 8 * (p - 1));
    },

    Circ: function(p){
      return 1 - Math.sin(Math.acos(p));
    },

    Sine: function(p){
      return 1 - Math.sin((1 - p) * Math.PI / 2);
    },

    Back: function(p, x){
      x = x[0] || 1.618;
      return Math.pow(p, 2) * ((x + 1) * p - x);
    },

    Bounce: function(p){
      var value;
      for (var a = 0, b = 1; 1; a += b, b /= 2){
        if (p >= (7 - 4 * a) / 11){
          value = b * b - Math.pow((11 - 6 * a - 11 * p) / 4, 2);
          break;
        }
      }
      return value;
    },

    Elastic: function(p, x){
      return Math.pow(2, 10 * --p) * Math.cos(20 * p * Math.PI * (x[0] || 1) / 3);
    }

  });

  ['Quad', 'Cubic', 'Quart', 'Quint'].each(function(transition, i){
    Fx.Transitions[transition] = new Fx.Transition(function(p){
      return Math.pow(p, [i + 2]);
    });
  });


  /*
  Script: Request.js
    Powerful all purpose Request Class. Uses XMLHTTPRequest.

  License:
    MIT-style license.
  */

  var Request = new Class({

    Implements: [Chain, Events, Options],

    options: {/*
      onRequest: $empty,
      onComplete: $empty,
      onCancel: $empty,
      onSuccess: $empty,
      onFailure: $empty,
      onException: $empty,*/
      url: '',
      data: '',
      headers: {
        'X-Requested-With': 'XMLHttpRequest',
        'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
      },
      async: true,
      format: false,
      method: 'post',
      link: 'ignore',
      isSuccess: null,
      emulation: true,
      urlEncoded: true,
      encoding: 'utf-8',
      evalScripts: false,
      evalResponse: false
    },

    initialize: function(options){
      this.xhr = new Browser.Request();
      this.setOptions(options);
      this.options.isSuccess = this.options.isSuccess || this.isSuccess;
      this.headers = new Hash(this.options.headers);
    },

    onStateChange: function(){
      if (this.xhr.readyState != 4 || !this.running) return;
      this.running = false;
      this.status = 0;
      $try(function(){
        this.status = this.xhr.status;
      }.bind(this));
      if (this.options.isSuccess.call(this, this.status)){
        this.response = {text: this.xhr.responseText, xml: this.xhr.responseXML};
        this.success(this.response.text, this.response.xml);
      } else {
        this.response = {text: null, xml: null};
        this.failure();
      }
      this.xhr.onreadystatechange = $empty;
    },

    isSuccess: function(){
      return ((this.status >= 200) && (this.status < 300));
    },

    processScripts: function(text){
      if (this.options.evalResponse || (/(ecma|java)script/).test(this.getHeader('Content-type'))) return $exec(text);
      return text.stripScripts(this.options.evalScripts);
    },

    success: function(text, xml){
      this.onSuccess(this.processScripts(text), xml);
    },

    onSuccess: function(){
      this.fireEvent('complete', arguments).fireEvent('success', arguments).callChain();
    },

    failure: function(){
      this.onFailure();
    },

    onFailure: function(){
      this.fireEvent('complete').fireEvent('failure', this.xhr);
    },

    setHeader: function(name, value){
      this.headers.set(name, value);
      return this;
    },

    getHeader: function(name){
      return $try(function(){
        return this.xhr.getResponseHeader(name);
      }.bind(this));
    },

    check: function(caller){
      if (!this.running) return true;
      switch (this.options.link){
        case 'cancel': this.cancel(); return true;
        case 'chain': this.chain(caller.bind(this, Array.slice(arguments, 1))); return false;
      }
      return false;
    },

    send: function(options){
      if (!this.check(arguments.callee, options)) return this;
      this.running = true;

      var type = $type(options);
      if (type == 'string' || type == 'element') options = {data: options};

      var old = this.options;
      options = $extend({data: old.data, url: old.url, method: old.method}, options);
      var data = options.data, url = options.url, method = options.method;

      switch ($type(data)){
        case 'element': data = $(data).toQueryString(); break;
        case 'object': case 'hash': data = Hash.toQueryString(data);
      }

      if (this.options.format){
        var format = 'format=' + this.options.format;
        data = (data) ? format + '&' + data : format;
      }

      if (this.options.emulation && ['put', 'delete'].contains(method)){
        var _method = '_method=' + method;
        data = (data) ? _method + '&' + data : _method;
        method = 'post';
      }

      if (this.options.urlEncoded && method == 'post'){
        var encoding = (this.options.encoding) ? '; charset=' + this.options.encoding : '';
        this.headers.set('Content-type', 'application/x-www-form-urlencoded' + encoding);
      }

      if (data && method == 'get'){
        url = url + (url.contains('?') ? '&' : '?') + data;
        data = null;
      }

      this.xhr.open(method.toUpperCase(), url, this.options.async);

      this.xhr.onreadystatechange = this.onStateChange.bind(this);

      this.headers.each(function(value, key){
        try {
          this.xhr.setRequestHeader(key, value);
        } catch (e){
          this.fireEvent('exception', [key, value]);
        }
      }, this);

      this.fireEvent('request');
      this.xhr.send(data);
      if (!this.options.async) this.onStateChange();
      return this;
    },

    cancel: function(){
      if (!this.running) return this;
      this.running = false;
      this.xhr.abort();
      this.xhr.onreadystatechange = $empty;
      this.xhr = new Browser.Request();
      this.fireEvent('cancel');
      return this;
    }

  });

  (function(){

  var methods = {};
  ['get', 'post', 'put', 'delete', 'GET', 'POST', 'PUT', 'DELETE'].each(function(method){
    methods[method] = function(){
      var params = Array.link(arguments, {url: String.type, data: $defined});
      return this.send($extend(params, {method: method.toLowerCase()}));
    };
  });

  Request.implement(methods);

  })();

  Element.Properties.send = {

    set: function(options){
      var send = this.retrieve('send');
      if (send) send.cancel();
      return this.eliminate('send').store('send:options', $extend({
        data: this, link: 'cancel', method: this.get('method') || 'post', url: this.get('action')
      }, options));
    },

    get: function(options){
      if (options || !this.retrieve('send')){
        if (options || !this.retrieve('send:options')) this.set('send', options);
        this.store('send', new Request(this.retrieve('send:options')));
      }
      return this.retrieve('send');
    }

  };

  Element.implement({

    send: function(url){
      var sender = this.get('send');
      sender.send({data: this, url: url || sender.options.url});
      return this;
    }

  });


  /*
  Script: Request.HTML.js
    Extends the basic Request Class with additional methods for interacting with HTML responses.

  License:
    MIT-style license.
  */

  Request.HTML = new Class({

    Extends: Request,

    options: {
      update: false,
      evalScripts: true,
      filter: false
    },

    processHTML: function(text){
      var match = text.match(/<body[^>]*>([\s\S]*?)<\/body>/i);
      text = (match) ? match[1] : text;

      var container = new Element('div');

      return $try(function(){
        var root = '<root>' + text + '</root>', doc;
        if (Browser.Engine.trident){
          doc = new ActiveXObject('Microsoft.XMLDOM');
          doc.async = false;
          doc.loadXML(root);
        } else {
          doc = new DOMParser().parseFromString(root, 'text/xml');
        }
        root = doc.getElementsByTagName('root')[0];
        for (var i = 0, k = root.childNodes.length; i < k; i++){
          var child = Element.clone(root.childNodes[i], true, true);
          if (child) container.grab(child);
        }
        return container;
      }) || container.set('html', text);
    },

    success: function(text){
      var options = this.options, response = this.response;

      response.html = text.stripScripts(function(script){
        response.javascript = script;
      });

      var temp = this.processHTML(response.html);

      response.tree = temp.childNodes;
      response.elements = temp.getElements('*');

      if (options.filter) response.tree = response.elements.filter(options.filter);
      if (options.update) $(options.update).empty().set('html', response.html);
      if (options.evalScripts) $exec(response.javascript);

      this.onSuccess(response.tree, response.elements, response.html, response.javascript);
    }

  });

  Element.Properties.load = {

    set: function(options){
      var load = this.retrieve('load');
      if (load) load.cancel();
      return this.eliminate('load').store('load:options', $extend({data: this, link: 'cancel', update: this, method: 'get'}, options));
    },

    get: function(options){
      if (options || ! this.retrieve('load')){
        if (options || !this.retrieve('load:options')) this.set('load', options);
        this.store('load', new Request.HTML(this.retrieve('load:options')));
      }
      return this.retrieve('load');
    }

  };

  Element.implement({

    load: function(){
      this.get('load').send(Array.link(arguments, {data: Object.type, url: String.type}));
      return this;
    }

  });


  /*
  Script: Request.JSON.js
    Extends the basic Request Class with additional methods for sending and receiving JSON data.

  License:
    MIT-style license.
  */

  Request.JSON = new Class({

    Extends: Request,

    options: {
      secure: true
    },

    initialize: function(options){
      this.parent(options);
      this.headers.extend({'Accept': 'application/json', 'X-Request': 'JSON'});
    },

    success: function(text){
      this.response.json = JSON.decode(text, this.options.secure);
      this.onSuccess(this.response.json, text);
    }

  });