/*  Prototype JavaScript framework, version 1.4.0
 *  (c) 2005 Sam Stephenson <sam@conio.net>
 *
 *  THIS FILE IS AUTOMATICALLY GENERATED. When sending patches, please diff
 *  against the source tree, available from the Prototype darcs repository.
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *
 *  For details, see the Prototype web site: http://prototype.conio.net/
 *
/*--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.4.0',
  ScriptFragment: '(?:<script.*?>)((\n|\r|.)*?)(?:<\/script>)',
  emptyFunction: function() {},
  K: function(x) {return x}
}

var Class = {
  create: function() {
    return function() {
      this.initialize.apply(this, arguments);
    }
  }
}

var Abstract = new Object();

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

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

Function.prototype.bind = function() {
  var __method = this, args = $A(arguments), object = args.shift();
  return function() {
    return __method.apply(object, args.concat($A(arguments)));
  }
}

Function.prototype.bindAsEventListener = function(object) {
  var __method = this;
  return function(event) {
    return __method.call(object, event || window.event);
  }
}

Object.extend(Number.prototype, {
  toColorPart: function() {
    var digits = this.toString(16);
    if (this < 16) return '0' + digits;
    return digits;
  },
  succ: function() {
    return this + 1;
  },

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

var Try = {
  these: function() {
    var returnValue;
    for (var i = 0; i < arguments.length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) {}
    }
    return returnValue;
  }
}

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

var PeriodicalExecuter = Class.create();
PeriodicalExecuter.prototype = {
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;
    this.registerCallback();
  },
  registerCallback: function() {
    setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.callback();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
}

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

function $() {
  var elements = new Array();
  for (var i = 0; i < arguments.length; i++) {
    var element = arguments[i];
    if (typeof element == 'string')
      element = document.getElementById(element);
    if (arguments.length == 1)
      return element;
    elements.push(element);
  }
  return elements;
}

Object.extend(String.prototype, {
  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },
  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },
  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },
  evalScripts: function() {
    return this.extractScripts().map(eval);
  },

  escapeHTML: function() {
    var div = document.createElement('div');
    var text = document.createTextNode(this);
    div.appendChild(text);
    return div.innerHTML;
  },

  unescapeHTML: function() {
    var div = document.createElement('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? div.childNodes[0].nodeValue : '';
  },

  toQueryParams: function() {
    var pairs = this.match(/^\??(.*)$/)[1].split('&');
    return pairs.inject({}, function(params, pairString) {
      var pair = pairString.split('=');
      params[pair[0]] = pair[1];
      return params;
    });
  },

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

  camelize: function() {
    var oStringList = this.split('-');
    if (oStringList.length == 1) return oStringList[0];

    var camelizedString = this.indexOf('-') == 0
      ? oStringList[0].charAt(0).toUpperCase() + oStringList[0].substring(1)
      : oStringList[0];

    for (var i = 1, len = oStringList.length; i < len; i++) {
      var s = oStringList[i];
      camelizedString += s.charAt(0).toUpperCase() + s.substring(1);
    }

    return camelizedString;
  },

  inspect: function() {
    return "'" + this.replace('\\', '\\\\').replace("'", '\\\'') + "'";
  }
});

String.prototype.parseQuery = String.prototype.toQueryParams;

var $break    = new Object();
var $continue = new Object();
var Enumerable = {
  each: function(iterator) {
    var index = 0;
    try {
      this._each(function(value) {
        try {
          iterator(value, index++);
        } catch (e) {
          if (e != $continue) throw e;
        }
      });
    } catch (e) {
      if (e != $break) throw e;
    }
  },

  all: function(iterator) {


    var result = true;


    this.each(function(value, index) {


      result = result && !!(iterator || Prototype.K)(value, index);


      if (!result) throw $break;


    });


    return result;


  },





  any: function(iterator) {


    var result = true;


    this.each(function(value, index) {


      if (result = !!(iterator || Prototype.K)(value, index))


        throw $break;


    });


    return result;


  },





  collect: function(iterator) {


    var results = [];


    this.each(function(value, index) {


      results.push(iterator(value, index));


    });


    return results;


  },





  detect: function (iterator) {


    var result;


    this.each(function(value, index) {


      if (iterator(value, index)) {


        result = value;


        throw $break;


      }


    });


    return result;


  },





  findAll: function(iterator) {


    var results = [];


    this.each(function(value, index) {


      if (iterator(value, index))


        results.push(value);


    });


    return results;


  },





  grep: function(pattern, iterator) {


    var results = [];


    this.each(function(value, index) {


      var stringValue = value.toString();


      if (stringValue.match(pattern))


        results.push((iterator || Prototype.K)(value, index));


    })


    return results;


  },





  include: function(object) {


    var found = false;


    this.each(function(value) {


      if (value == object) {


        found = true;


        throw $break;


      }


    });


    return found;


  },





  inject: function(memo, iterator) {


    this.each(function(value, index) {


      memo = iterator(memo, value, index);


    });


    return memo;


  },





  invoke: function(method) {


    var args = $A(arguments).slice(1);


    return this.collect(function(value) {


      return value[method].apply(value, args);


    });


  },





  max: function(iterator) {


    var result;


    this.each(function(value, index) {


      value = (iterator || Prototype.K)(value, index);


      if (value >= (result || value))


        result = value;


    });


    return result;


  },





  min: function(iterator) {


    var result;


    this.each(function(value, index) {


      value = (iterator || Prototype.K)(value, index);


      if (value <= (result || value))


        result = value;


    });


    return result;


  },





  partition: function(iterator) {


    var trues = [], falses = [];


    this.each(function(value, index) {


      ((iterator || Prototype.K)(value, index) ?


        trues : falses).push(value);


    });


    return [trues, falses];


  },





  pluck: function(property) {


    var results = [];


    this.each(function(value, index) {


      results.push(value[property]);


    });


    return results;


  },





  reject: function(iterator) {


    var results = [];


    this.each(function(value, index) {


      if (!iterator(value, index))


        results.push(value);


    });


    return results;


  },





  sortBy: function(iterator) {


    return this.collect(function(value, index) {


      return {value: value, criteria: iterator(value, index)};


    }).sort(function(left, right) {


      var a = left.criteria, b = right.criteria;


      return a < b ? -1 : a > b ? 1 : 0;


    }).pluck('value');


  },





  toArray: function() {


    return this.collect(Prototype.K);


  },





  zip: function() {


    var iterator = Prototype.K, args = $A(arguments);


    if (typeof args.last() == 'function')


      iterator = args.pop();





    var collections = [this].concat(args).map($A);


    return this.map(function(value, index) {


      iterator(value = collections.pluck(index));


      return value;


    });


  },





  inspect: function() {


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


  }


}





Object.extend(Enumerable, {


  map:     Enumerable.collect,


  find:    Enumerable.detect,


  select:  Enumerable.findAll,


  member:  Enumerable.include,


  entries: Enumerable.toArray


});


var $A = Array.from = function(iterable) {


  if (!iterable) return [];


  if (iterable.toArray) {


    return iterable.toArray();


  } else {


    var results = [];


    for (var i = 0; i < iterable.length; i++)


      results.push(iterable[i]);


    return results;


  }


}





Object.extend(Array.prototype, Enumerable);





Array.prototype._reverse = Array.prototype.reverse;





Object.extend(Array.prototype, {


  _each: function(iterator) {


    for (var i = 0; i < this.length; i++)


      iterator(this[i]);


  },





  clear: function() {


    this.length = 0;


    return this;


  },





  first: function() {


    return this[0];


  },





  last: function() {


    return this[this.length - 1];


  },





  compact: function() {


    return this.select(function(value) {


      return value != undefined || value != null;


    });


  },





  flatten: function() {


    return this.inject([], function(array, value) {


      return array.concat(value.constructor == Array ?


        value.flatten() : [value]);


    });


  },





  without: function() {


    var values = $A(arguments);


    return this.select(function(value) {


      return !values.include(value);


    });


  },





  indexOf: function(object) {


    for (var i = 0; i < this.length; i++)


      if (this[i] == object) return i;


    return -1;


  },





  reverse: function(inline) {


    return (inline !== false ? this : this.toArray())._reverse();


  },





  shift: function() {


    var result = this[0];


    for (var i = 0; i < this.length - 1; i++)


      this[i] = this[i + 1];


    this.length--;


    return result;


  },





  inspect: function() {


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


  }


});


var Hash = {


  _each: function(iterator) {


    for (key in this) {


      var value = this[key];


      if (typeof value == 'function') continue;





      var pair = [key, value];


      pair.key = key;


      pair.value = value;


      iterator(pair);


    }


  },





  keys: function() {


    return this.pluck('key');


  },





  values: function() {


    return this.pluck('value');


  },





  merge: function(hash) {


    return $H(hash).inject($H(this), function(mergedHash, pair) {


      mergedHash[pair.key] = pair.value;


      return mergedHash;


    });


  },





  toQueryString: function() {


    return this.map(function(pair) {


      return pair.map(encodeURIComponent).join('=');


    }).join('&');


  },





  inspect: function() {


    return '#<Hash:{' + this.map(function(pair) {


      return pair.map(Object.inspect).join(': ');


    }).join(', ') + '}>';


  }


}





function $H(object) {


  var hash = Object.extend({}, object || {});


  Object.extend(hash, Enumerable);


  Object.extend(hash, Hash);


  return hash;


}


ObjectRange = Class.create();


Object.extend(ObjectRange.prototype, Enumerable);


Object.extend(ObjectRange.prototype, {


  initialize: function(start, end, exclusive) {


    this.start = start;


    this.end = end;


    this.exclusive = exclusive;


  },





  _each: function(iterator) {


    var value = this.start;


    do {


      iterator(value);


      value = value.succ();


    } while (this.include(value));


  },





  include: function(value) {


    if (value < this.start)


      return false;


    if (this.exclusive)


      return value < this.end;


    return value <= this.end;


  }


});





var $R = function(start, end, exclusive) {


  return new ObjectRange(start, end, exclusive);


}





var Ajax = {


  getTransport: function() {


    return Try.these(


      function() {return new ActiveXObject('Msxml2.XMLHTTP')},


      function() {return new ActiveXObject('Microsoft.XMLHTTP')},


      function() {return new XMLHttpRequest()}


    ) || false;


  },





  activeRequestCount: 0


}





Ajax.Responders = {


  responders: [],





  _each: function(iterator) {


    this.responders._each(iterator);


  },





  register: function(responderToAdd) {


    if (!this.include(responderToAdd))


      this.responders.push(responderToAdd);


  },





  unregister: function(responderToRemove) {


    this.responders = this.responders.without(responderToRemove);


  },





  dispatch: function(callback, request, transport, json) {


    this.each(function(responder) {


      if (responder[callback] && typeof responder[callback] == 'function') {


        try {


          responder[callback].apply(responder, [request, transport, json]);


        } catch (e) {}


      }


    });


  }


};





Object.extend(Ajax.Responders, Enumerable);





Ajax.Responders.register({


  onCreate: function() {


    Ajax.activeRequestCount++;


  },





  onComplete: function() {


    Ajax.activeRequestCount--;


  }


});





Ajax.Base = function() {};


Ajax.Base.prototype = {


  setOptions: function(options) {


    this.options = {


      method:       'post',


      asynchronous: true,


      parameters:   ''


    }


    Object.extend(this.options, options || {});


  },





  responseIsSuccess: function() {


    return this.transport.status == undefined


        || this.transport.status == 0


        || (this.transport.status >= 200 && this.transport.status < 300);


  },





  responseIsFailure: function() {


    return !this.responseIsSuccess();


  }


}





Ajax.Request = Class.create();


Ajax.Request.Events =


  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];





Ajax.Request.prototype = Object.extend(new Ajax.Base(), {


  initialize: function(url, options) {


    this.transport = Ajax.getTransport();


    this.setOptions(options);


    this.request(url);


  },





  request: function(url) {


    var parameters = this.options.parameters || '';


    if (parameters.length > 0) parameters += '&_=';





    try {


      this.url = url;


      if (this.options.method == 'get' && parameters.length > 0)


        this.url += (this.url.match(/\?/) ? '&' : '?') + parameters;





      Ajax.Responders.dispatch('onCreate', this, this.transport);





      this.transport.open(this.options.method, this.url,


        this.options.asynchronous);





      if (this.options.asynchronous) {


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


        setTimeout((function() {this.respondToReadyState(1)}).bind(this), 10);


      }





      this.setRequestHeaders();





      var body = this.options.postBody ? this.options.postBody : parameters;


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





    } catch (e) {


      this.dispatchException(e);


    }


  },





  setRequestHeaders: function() {


    var requestHeaders =


      ['X-Requested-With', 'XMLHttpRequest',


       'X-Prototype-Version', Prototype.Version];





    if (this.options.method == 'post') {


      requestHeaders.push('Content-type',


        'application/x-www-form-urlencoded');





      /* Force "Connection: close" for Mozilla browsers to work around


       * a bug where XMLHttpReqeuest sends an incorrect Content-length


       * header. See Mozilla Bugzilla #246651.


       */


      if (this.transport.overrideMimeType)


        requestHeaders.push('Connection', 'close');


    }





    if (this.options.requestHeaders)


      requestHeaders.push.apply(requestHeaders, this.options.requestHeaders);





    for (var i = 0; i < requestHeaders.length; i += 2)


      this.transport.setRequestHeader(requestHeaders[i], requestHeaders[i+1]);


  },





  onStateChange: function() {


    var readyState = this.transport.readyState;


    if (readyState != 1)


      this.respondToReadyState(this.transport.readyState);


  },





  header: function(name) {


    try {


      return this.transport.getResponseHeader(name);


    } catch (e) {}


  },





  evalJSON: function() {


    try {


      return eval(this.header('X-JSON'));


    } catch (e) {}


  },





  evalResponse: function() {


    try {


      return eval(this.transport.responseText);


    } catch (e) {


      this.dispatchException(e);


    }


  },





  respondToReadyState: function(readyState) {


    var event = Ajax.Request.Events[readyState];


    var transport = this.transport, json = this.evalJSON();





    if (event == 'Complete') {


      try {


        (this.options['on' + this.transport.status]


         || this.options['on' + (this.responseIsSuccess() ? 'Success' : 'Failure')]


         || Prototype.emptyFunction)(transport, json);


      } catch (e) {


        this.dispatchException(e);


      }





      if ((this.header('Content-type') || '').match(/^text\/javascript/i))


        this.evalResponse();


    }





    try {


      (this.options['on' + event] || Prototype.emptyFunction)(transport, json);


      Ajax.Responders.dispatch('on' + event, this, transport, json);


    } catch (e) {


      this.dispatchException(e);


    }





    /* Avoid memory leak in MSIE: clean up the oncomplete event handler */


    if (event == 'Complete')


      this.transport.onreadystatechange = Prototype.emptyFunction;


  },





  dispatchException: function(exception) {


    (this.options.onException || Prototype.emptyFunction)(this, exception);


    Ajax.Responders.dispatch('onException', this, exception);


  }


});





Ajax.Updater = Class.create();





Object.extend(Object.extend(Ajax.Updater.prototype, Ajax.Request.prototype), {


  initialize: function(container, url, options) {


    this.containers = {


      success: container.success ? $(container.success) : $(container),


      failure: container.failure ? $(container.failure) :


        (container.success ? null : $(container))


    }





    this.transport = Ajax.getTransport();


    this.setOptions(options);





    var onComplete = this.options.onComplete || Prototype.emptyFunction;


    this.options.onComplete = (function(transport, object) {


      this.updateContent();


      onComplete(transport, object);


    }).bind(this);





    this.request(url);


  },





  updateContent: function() {


    var receiver = this.responseIsSuccess() ?


      this.containers.success : this.containers.failure;


    var response = this.transport.responseText;





    if (!this.options.evalScripts)


      response = response.stripScripts();





    if (receiver) {


      if (this.options.insertion) {


        new this.options.insertion(receiver, response);


      } else {


        Element.update(receiver, response);


      }


    }





    if (this.responseIsSuccess()) {


      if (this.onComplete)


        setTimeout(this.onComplete.bind(this), 10);


    }


  }


});





Ajax.PeriodicalUpdater = Class.create();


Ajax.PeriodicalUpdater.prototype = Object.extend(new Ajax.Base(), {


  initialize: function(container, url, options) {


    this.setOptions(options);


    this.onComplete = this.options.onComplete;





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


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





    this.updater = {};


    this.container = container;


    this.url = url;





    this.start();


  },





  start: function() {


    this.options.onComplete = this.updateComplete.bind(this);


    this.onTimerEvent();


  },





  stop: function() {


    this.updater.onComplete = undefined;


    clearTimeout(this.timer);


    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);


  },





  updateComplete: function(request) {


    if (this.options.decay) {


      this.decay = (request.responseText == this.lastText ?


        this.decay * this.options.decay : 1);





      this.lastText = request.responseText;


    }


    this.timer = setTimeout(this.onTimerEvent.bind(this),


      this.decay * this.frequency * 1000);


  },





  onTimerEvent: function() {


    this.updater = new Ajax.Updater(this.container, this.url, this.options);


  }


});


document.getElementsByClassName = function(className, parentElement) {


  var children = ($(parentElement) || document.body).getElementsByTagName('*');


  return $A(children).inject([], function(elements, child) {


    if (child.className.match(new RegExp("(^|\\s)" + className + "(\\s|$)")))


      elements.push(child);


    return elements;


  });


}





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





if (!window.Element) {


  var Element = new Object();


}





Object.extend(Element, {


  visible: function(element) {


    return $(element).style.display != 'none';


  },





  toggle: function() {


    for (var i = 0; i < arguments.length; i++) {


      var element = $(arguments[i]);


      Element[Element.visible(element) ? 'hide' : 'show'](element);


    }


  },





  hide: function() {


    for (var i = 0; i < arguments.length; i++) {


      var element = $(arguments[i]);


      element.style.display = 'none';


    }


  },





  show: function() {


    for (var i = 0; i < arguments.length; i++) {


      var element = $(arguments[i]);


      element.style.display = '';


    }


  },





  remove: function(element) {


    element = $(element);


    element.parentNode.removeChild(element);


  },





  update: function(element, html) {


    $(element).innerHTML = html.stripScripts();


    setTimeout(function() {html.evalScripts()}, 10);


  },





  getHeight: function(element) {


    element = $(element);


    return element.offsetHeight;


  },





  classNames: function(element) {


    return new Element.ClassNames(element);


  },





  hasClassName: function(element, className) {


    if (!(element = $(element))) return;


    return Element.classNames(element).include(className);


  },





  addClassName: function(element, className) {


    if (!(element = $(element))) return;


    return Element.classNames(element).add(className);


  },





  removeClassName: function(element, className) {


    if (!(element = $(element))) return;


    return Element.classNames(element).remove(className);


  },





  // removes whitespace-only text node children


  cleanWhitespace: function(element) {


    element = $(element);


    for (var i = 0; i < element.childNodes.length; i++) {


      var node = element.childNodes[i];


      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))


        Element.remove(node);


    }


  },





  empty: function(element) {


    return $(element).innerHTML.match(/^\s*$/);


  },





  scrollTo: function(element) {


    element = $(element);


    var x = element.x ? element.x : element.offsetLeft,


        y = element.y ? element.y : element.offsetTop;


    window.scrollTo(x, y);


  },





  getStyle: function(element, style) {


    element = $(element);


    var value = element.style[style.camelize()];


    if (!value) {


      if (document.defaultView && document.defaultView.getComputedStyle) {


        var css = document.defaultView.getComputedStyle(element, null);


        value = css ? css.getPropertyValue(style) : null;


      } else if (element.currentStyle) {


        value = element.currentStyle[style.camelize()];


      }


    }





    if (window.opera && ['left', 'top', 'right', 'bottom'].include(style))


      if (Element.getStyle(element, 'position') == 'static') value = 'auto';





    return value == 'auto' ? null : value;


  },





  setStyle: function(element, style) {


    element = $(element);


    for (name in style)


      element.style[name.camelize()] = style[name];


  },





  getDimensions: function(element) {


    element = $(element);


    if (Element.getStyle(element, 'display') != 'none')


      return {width: element.offsetWidth, height: element.offsetHeight};





    // All *Width and *Height properties give 0 on elements with display none,


    // so enable the element temporarily


    var els = element.style;


    var originalVisibility = els.visibility;


    var originalPosition = els.position;


    els.visibility = 'hidden';


    els.position = 'absolute';


    els.display = '';


    var originalWidth = element.clientWidth;


    var originalHeight = element.clientHeight;


    els.display = 'none';


    els.position = originalPosition;


    els.visibility = originalVisibility;


    return {width: originalWidth, height: originalHeight};


  },





  makePositioned: function(element) {


    element = $(element);


    var pos = Element.getStyle(element, 'position');


    if (pos == 'static' || !pos) {


      element._madePositioned = true;


      element.style.position = 'relative';


      // Opera returns the offset relative to the positioning context, when an


      // element is position relative but top and left have not been defined


      if (window.opera) {


        element.style.top = 0;


        element.style.left = 0;


      }


    }


  },





  undoPositioned: function(element) {


    element = $(element);


    if (element._madePositioned) {


      element._madePositioned = undefined;


      element.style.position =


        element.style.top =


        element.style.left =


        element.style.bottom =


        element.style.right = '';


    }


  },





  makeClipping: function(element) {


    element = $(element);


    if (element._overflow) return;


    element._overflow = element.style.overflow;


    if ((Element.getStyle(element, 'overflow') || 'visible') != 'hidden')


      element.style.overflow = 'hidden';


  },





  undoClipping: function(element) {


    element = $(element);


    if (element._overflow) return;


    element.style.overflow = element._overflow;


    element._overflow = undefined;


  }


});





var Toggle = new Object();


Toggle.display = Element.toggle;





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





Abstract.Insertion = function(adjacency) {


  this.adjacency = adjacency;


}





Abstract.Insertion.prototype = {


  initialize: function(element, content) {


    this.element = $(element);


    this.content = content.stripScripts();





    if (this.adjacency && this.element.insertAdjacentHTML) {


      try {


        this.element.insertAdjacentHTML(this.adjacency, this.content);


      } catch (e) {


        if (this.element.tagName.toLowerCase() == 'tbody') {


          this.insertContent(this.contentFromAnonymousTable());


        } else {


          throw e;


        }


      }


    } else {


      this.range = this.element.ownerDocument.createRange();


      if (this.initializeRange) this.initializeRange();


      this.insertContent([this.range.createContextualFragment(this.content)]);


    }





    setTimeout(function() {content.evalScripts()}, 10);


  },





  contentFromAnonymousTable: function() {


    var div = document.createElement('div');


    div.innerHTML = '<table><tbody>' + this.content + '</tbody></table>';


    return $A(div.childNodes[0].childNodes[0].childNodes);


  }


}





var Insertion = new Object();





Insertion.Before = Class.create();


Insertion.Before.prototype = Object.extend(new Abstract.Insertion('beforeBegin'), {


  initializeRange: function() {


    this.range.setStartBefore(this.element);


  },





  insertContent: function(fragments) {


    fragments.each((function(fragment) {


      this.element.parentNode.insertBefore(fragment, this.element);


    }).bind(this));


  }


});





Insertion.Top = Class.create();


Insertion.Top.prototype = Object.extend(new Abstract.Insertion('afterBegin'), {


  initializeRange: function() {


    this.range.selectNodeContents(this.element);


    this.range.collapse(true);


  },





  insertContent: function(fragments) {


    fragments.reverse(false).each((function(fragment) {


      this.element.insertBefore(fragment, this.element.firstChild);


    }).bind(this));


  }


});





Insertion.Bottom = Class.create();


Insertion.Bottom.prototype = Object.extend(new Abstract.Insertion('beforeEnd'), {


  initializeRange: function() {


    this.range.selectNodeContents(this.element);


    this.range.collapse(this.element);


  },





  insertContent: function(fragments) {


    fragments.each((function(fragment) {


      this.element.appendChild(fragment);


    }).bind(this));


  }


});





Insertion.After = Class.create();


Insertion.After.prototype = Object.extend(new Abstract.Insertion('afterEnd'), {


  initializeRange: function() {


    this.range.setStartAfter(this.element);


  },





  insertContent: function(fragments) {


    fragments.each((function(fragment) {


      this.element.parentNode.insertBefore(fragment,


        this.element.nextSibling);


    }).bind(this));


  }


});





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





Element.ClassNames = Class.create();


Element.ClassNames.prototype = {


  initialize: function(element) {


    this.element = $(element);


  },





  _each: function(iterator) {


    this.element.className.split(/\s+/).select(function(name) {


      return name.length > 0;


    })._each(iterator);


  },





  set: function(className) {


    this.element.className = className;


  },





  add: function(classNameToAdd) {


    if (this.include(classNameToAdd)) return;


    this.set(this.toArray().concat(classNameToAdd).join(' '));


  },





  remove: function(classNameToRemove) {


    if (!this.include(classNameToRemove)) return;


    this.set(this.select(function(className) {


      return className != classNameToRemove;


    }).join(' '));


  },





  toString: function() {


    return this.toArray().join(' ');


  }


}





Object.extend(Element.ClassNames.prototype, Enumerable);


var Field = {


  clear: function() {


    for (var i = 0; i < arguments.length; i++)


      $(arguments[i]).value = '';


  },





  focus: function(element) {


    $(element).focus();


  },





  present: function() {


    for (var i = 0; i < arguments.length; i++)


      if ($(arguments[i]).value == '') return false;


    return true;


  },





  select: function(element) {


    $(element).select();


  },





  activate: function(element) {


    element = $(element);


    element.focus();


    if (element.select)


      element.select();


  }


}





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





var Form = {


  serialize: function(form) {


    var elements = Form.getElements($(form));


    var queryComponents = new Array();





    for (var i = 0; i < elements.length; i++) {


      var queryComponent = Form.Element.serialize(elements[i]);


      if (queryComponent)


        queryComponents.push(queryComponent);


    }





    return queryComponents.join('&');


  },





  getElements: function(form) {


    form = $(form);


    var elements = new Array();





    for (tagName in Form.Element.Serializers) {


      var tagElements = form.getElementsByTagName(tagName);


      for (var j = 0; j < tagElements.length; j++)


        elements.push(tagElements[j]);


    }


    return elements;


  },





  getInputs: function(form, typeName, name) {


    form = $(form);


    var inputs = form.getElementsByTagName('input');





    if (!typeName && !name)


      return inputs;





    var matchingInputs = new Array();


    for (var i = 0; i < inputs.length; i++) {


      var input = inputs[i];


      if ((typeName && input.type != typeName) ||


          (name && input.name != name))


        continue;


      matchingInputs.push(input);


    }





    return matchingInputs;


  },





  disable: function(form) {


    var elements = Form.getElements(form);


    for (var i = 0; i < elements.length; i++) {


      var element = elements[i];


      element.blur();


      element.disabled = 'true';


    }


  },





  enable: function(form) {


    var elements = Form.getElements(form);


    for (var i = 0; i < elements.length; i++) {


      var element = elements[i];


      element.disabled = '';


    }


  },





  findFirstElement: function(form) {


    return Form.getElements(form).find(function(element) {


      return element.type != 'hidden' && !element.disabled &&


        ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());


    });


  },





  focusFirstElement: function(form) {


    Field.activate(Form.findFirstElement(form));


  },





  reset: function(form) {


    $(form).reset();


  }


}





Form.Element = {


  serialize: function(element) {


    element = $(element);


    var method = element.tagName.toLowerCase();


    var parameter = Form.Element.Serializers[method](element);





    if (parameter) {


      var key = encodeURIComponent(parameter[0]);


      if (key.length == 0) return;





      if (parameter[1].constructor != Array)


        parameter[1] = [parameter[1]];





      return parameter[1].map(function(value) {


        return key + '=' + encodeURIComponent(value);


      }).join('&');


    }


  },





  getValue: function(element) {


    element = $(element);


    var method = element.tagName.toLowerCase();


    var parameter = Form.Element.Serializers[method](element);





    if (parameter)


      return parameter[1];


  }


}





Form.Element.Serializers = {


  input: function(element) {


    switch (element.type.toLowerCase()) {


      case 'submit':


      case 'hidden':


      case 'password':


      case 'text':


        return Form.Element.Serializers.textarea(element);


      case 'checkbox':


      case 'radio':


        return Form.Element.Serializers.inputSelector(element);


    }


    return false;


  },





  inputSelector: function(element) {


    if (element.checked)


      return [element.name, element.value];


  },





  textarea: function(element) {


    return [element.name, element.value];


  },





  select: function(element) {


    return Form.Element.Serializers[element.type == 'select-one' ?


      'selectOne' : 'selectMany'](element);


  },





  selectOne: function(element) {


    var value = '', opt, index = element.selectedIndex;


    if (index >= 0) {


      opt = element.options[index];


      value = opt.value;


      if (!value && !('value' in opt))


        value = opt.text;


    }


    return [element.name, value];


  },





  selectMany: function(element) {


    var value = new Array();


    for (var i = 0; i < element.length; i++) {


      var opt = element.options[i];


      if (opt.selected) {


        var optValue = opt.value;


        if (!optValue && !('value' in opt))


          optValue = opt.text;


        value.push(optValue);


      }


    }


    return [element.name, value];


  }


}





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





var $F = Form.Element.getValue;





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





Abstract.TimedObserver = function() {}


Abstract.TimedObserver.prototype = {


  initialize: function(element, frequency, callback) {


    this.frequency = frequency;


    this.element   = $(element);


    this.callback  = callback;





    this.lastValue = this.getValue();


    this.registerCallback();


  },





  registerCallback: function() {


    setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);


  },





  onTimerEvent: function() {


    var value = this.getValue();


    if (this.lastValue != value) {


      this.callback(this.element, value);


      this.lastValue = value;


    }


  }


}





Form.Element.Observer = Class.create();


Form.Element.Observer.prototype = Object.extend(new Abstract.TimedObserver(), {


  getValue: function() {


    return Form.Element.getValue(this.element);


  }


});





Form.Observer = Class.create();


Form.Observer.prototype = Object.extend(new Abstract.TimedObserver(), {


  getValue: function() {


    return Form.serialize(this.element);


  }


});





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





Abstract.EventObserver = function() {}


Abstract.EventObserver.prototype = {


  initialize: function(element, callback) {


    this.element  = $(element);


    this.callback = callback;





    this.lastValue = this.getValue();


    if (this.element.tagName.toLowerCase() == 'form')


      this.registerFormCallbacks();


    else


      this.registerCallback(this.element);


  },





  onElementEvent: function() {


    var value = this.getValue();


    if (this.lastValue != value) {


      this.callback(this.element, value);


      this.lastValue = value;


    }


  },





  registerFormCallbacks: function() {


    var elements = Form.getElements(this.element);


    for (var i = 0; i < elements.length; i++)


      this.registerCallback(elements[i]);


  },





  registerCallback: function(element) {


    if (element.type) {


      switch (element.type.toLowerCase()) {


        case 'checkbox':


        case 'radio':


          Event.observe(element, 'click', this.onElementEvent.bind(this));


          break;


        case 'password':


        case 'text':


        case 'textarea':


        case 'select-one':


        case 'select-multiple':


          Event.observe(element, 'change', this.onElementEvent.bind(this));


          break;


      }


    }


  }


}





Form.Element.EventObserver = Class.create();


Form.Element.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {


  getValue: function() {


    return Form.Element.getValue(this.element);


  }


});





Form.EventObserver = Class.create();


Form.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {


  getValue: function() {


    return Form.serialize(this.element);


  }


});


if (!window.Event) {


  var Event = new Object();


}





Object.extend(Event, {


  KEY_BACKSPACE: 8,


  KEY_TAB:       9,


  KEY_RETURN:   13,


  KEY_ESC:      27,


  KEY_LEFT:     37,


  KEY_UP:       38,


  KEY_RIGHT:    39,


  KEY_DOWN:     40,


  KEY_DELETE:   46,





  element: function(event) {


    return event.target || event.srcElement;


  },





  isLeftClick: function(event) {


    return (((event.which) && (event.which == 1)) ||


            ((event.button) && (event.button == 1)));


  },





  pointerX: function(event) {


    return event.pageX || (event.clientX +


      (document.documentElement.scrollLeft || document.body.scrollLeft));


  },





  pointerY: function(event) {


    return event.pageY || (event.clientY +


      (document.documentElement.scrollTop || document.body.scrollTop));


  },





  stop: function(event) {


    if (event.preventDefault) {


      event.preventDefault();


      event.stopPropagation();


    } else {


      event.returnValue = false;


      event.cancelBubble = true;


    }


  },





  // find the first node with the given tagName, starting from the


  // node the event was triggered on; traverses the DOM upwards


  findElement: function(event, tagName) {


    var element = Event.element(event);


    while (element.parentNode && (!element.tagName ||


        (element.tagName.toUpperCase() != tagName.toUpperCase())))


      element = element.parentNode;


    return element;


  },





  observers: false,





  _observeAndCache: function(element, name, observer, useCapture) {


    if (!this.observers) this.observers = [];


    if (element.addEventListener) {


      this.observers.push([element, name, observer, useCapture]);


      element.addEventListener(name, observer, useCapture);


    } else if (element.attachEvent) {


      this.observers.push([element, name, observer, useCapture]);


      element.attachEvent('on' + name, observer);


    }


  },





  unloadCache: function() {


    if (!Event.observers) return;


    for (var i = 0; i < Event.observers.length; i++) {


      Event.stopObserving.apply(this, Event.observers[i]);


      Event.observers[i][0] = null;


    }


    Event.observers = false;


  },





  observe: function(element, name, observer, useCapture) {


    var element = $(element);


    useCapture = useCapture || false;





    if (name == 'keypress' &&


        (navigator.appVersion.match(/Konqueror|Safari|KHTML/)


        || element.attachEvent))


      name = 'keydown';





    this._observeAndCache(element, name, observer, useCapture);


  },





  stopObserving: function(element, name, observer, useCapture) {


    var element = $(element);


    useCapture = useCapture || false;





    if (name == 'keypress' &&


        (navigator.appVersion.match(/Konqueror|Safari|KHTML/)


        || element.detachEvent))


      name = 'keydown';





    if (element.removeEventListener) {


      element.removeEventListener(name, observer, useCapture);


    } else if (element.detachEvent) {


      element.detachEvent('on' + name, observer);


    }


  }


});





/* prevent memory leaks in IE */


Event.observe(window, 'unload', Event.unloadCache, false);


var Position = {


  // set to true if needed, warning: firefox performance problems


  // NOT neeeded for page scrolling, only if draggable contained in


  // scrollable elements


  includeScrollOffsets: false,





  // must be called before calling withinIncludingScrolloffset, every time the


  // page is scrolled


  prepare: function() {


    this.deltaX =  window.pageXOffset


                || document.documentElement.scrollLeft


                || document.body.scrollLeft


                || 0;


    this.deltaY =  window.pageYOffset


                || document.documentElement.scrollTop


                || document.body.scrollTop


                || 0;


  },





  realOffset: function(element) {


    var valueT = 0, valueL = 0;


    do {


      valueT += element.scrollTop  || 0;


      valueL += element.scrollLeft || 0;


      element = element.parentNode;


    } while (element);


    return [valueL, valueT];


  },





  cumulativeOffset: function(element) {


    var valueT = 0, valueL = 0;


    do {


      valueT += element.offsetTop  || 0;


      valueL += element.offsetLeft || 0;


      element = element.offsetParent;


    } while (element);


    return [valueL, valueT];


  },





  positionedOffset: function(element) {


    var valueT = 0, valueL = 0;


    do {


      valueT += element.offsetTop  || 0;


      valueL += element.offsetLeft || 0;


      element = element.offsetParent;


      if (element) {


        p = Element.getStyle(element, 'position');


        if (p == 'relative' || p == 'absolute') break;


      }


    } while (element);


    return [valueL, valueT];


  },





  offsetParent: function(element) {


    if (element.offsetParent) return element.offsetParent;


    if (element == document.body) return element;





    while ((element = element.parentNode) && element != document.body)


      if (Element.getStyle(element, 'position') != 'static')


        return element;





    return document.body;


  },





  // caches x/y coordinate pair to use with overlap


  within: function(element, x, y) {


    if (this.includeScrollOffsets)


      return this.withinIncludingScrolloffsets(element, x, y);


    this.xcomp = x;


    this.ycomp = y;


    this.offset = this.cumulativeOffset(element);





    return (y >= this.offset[1] &&


            y <  this.offset[1] + element.offsetHeight &&


            x >= this.offset[0] &&


            x <  this.offset[0] + element.offsetWidth);


  },





  withinIncludingScrolloffsets: function(element, x, y) {


    var offsetcache = this.realOffset(element);





    this.xcomp = x + offsetcache[0] - this.deltaX;


    this.ycomp = y + offsetcache[1] - this.deltaY;


    this.offset = this.cumulativeOffset(element);





    return (this.ycomp >= this.offset[1] &&


            this.ycomp <  this.offset[1] + element.offsetHeight &&


            this.xcomp >= this.offset[0] &&


            this.xcomp <  this.offset[0] + element.offsetWidth);


  },





  // within must be called directly before


  overlap: function(mode, element) {


    if (!mode) return 0;


    if (mode == 'vertical')


      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /


        element.offsetHeight;


    if (mode == 'horizontal')


      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /


        element.offsetWidth;


  },





  clone: function(source, target) {


    source = $(source);


    target = $(target);


    target.style.position = 'absolute';


    var offsets = this.cumulativeOffset(source);


    target.style.top    = offsets[1] + 'px';


    target.style.left   = offsets[0] + 'px';


    target.style.width  = source.offsetWidth + 'px';


    target.style.height = source.offsetHeight + 'px';


  },





  page: function(forElement) {


    var valueT = 0, valueL = 0;





    var element = forElement;


    do {


      valueT += element.offsetTop  || 0;


      valueL += element.offsetLeft || 0;





      // Safari fix


      if (element.offsetParent==document.body)


        if (Element.getStyle(element,'position')=='absolute') break;





    } while (element = element.offsetParent);





    element = forElement;


    do {


      valueT -= element.scrollTop  || 0;


      valueL -= element.scrollLeft || 0;


    } while (element = element.parentNode);





    return [valueL, valueT];


  },





  clone: function(source, target) {


    var options = Object.extend({


      setLeft:    true,


      setTop:     true,


      setWidth:   true,


      setHeight:  true,


      offsetTop:  0,


      offsetLeft: 0


    }, arguments[2] || {})





    // find page position of source


    source = $(source);


    var p = Position.page(source);





    // find coordinate system to use


    target = $(target);


    var delta = [0, 0];


    var parent = null;


    // delta [0,0] will do fine with position: fixed elements,


    // position:absolute needs offsetParent deltas


    if (Element.getStyle(target,'position') == 'absolute') {


      parent = Position.offsetParent(target);


      delta = Position.page(parent);


    }





    // correct by body offsets (fixes Safari)


    if (parent == document.body) {


      delta[0] -= document.body.offsetLeft;


      delta[1] -= document.body.offsetTop;


    }





    // set position


    if(options.setLeft)   target.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';


    if(options.setTop)    target.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';


    if(options.setWidth)  target.style.width = source.offsetWidth + 'px';


    if(options.setHeight) target.style.height = source.offsetHeight + 'px';


  },





  absolutize: function(element) {


    element = $(element);


    if (element.style.position == 'absolute') return;


    Position.prepare();





    var offsets = Position.positionedOffset(element);


    var top     = offsets[1];


    var left    = offsets[0];


    var width   = element.clientWidth;


    var height  = element.clientHeight;





    element._originalLeft   = left - parseFloat(element.style.left  || 0);


    element._originalTop    = top  - parseFloat(element.style.top || 0);


    element._originalWidth  = element.style.width;


    element._originalHeight = element.style.height;





    element.style.position = 'absolute';


    element.style.top    = top + 'px';;


   element.style.left   = left + 'px';;
    element.style.width  = width + 'px';;
    element.style.height = height + 'px';;
  },
 relativize: function(element) {
    element = $(element);
    if (element.style.position == 'relative') return;
    Position.prepare();
    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
  }
}

// Safari returns margins on body which is incorrect if the child is absolutely
// positioned.  For performance reasons, redefine Position.cumulativeOffset for
// KHTML/WebKit only.
if (/Konqueror|Safari|KHTML/.test(navigator.userAgent)) {
  Position.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;
      element = element.offsetParent;
    } while (element);
    return [valueL, valueT];
  }
}