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];
}
}