//-------------- Event Handler ---------------
function addEvent( obj, type, fn ) {
	if (obj.addEventListener) {
		obj.addEventListener( type, fn, false );
		EventCache.add(obj, type, fn);
	}
	else if (obj.attachEvent) {
		obj["e"+type+fn] = fn;
		obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
		obj.attachEvent( "on"+type, obj[type+fn] );
		EventCache.add(obj, type, fn);
	}
	else {
		obj["on"+type] = obj["e"+type+fn];
	}
}

var EventCache = function(){
	var listEvents = [];
	return {
		listEvents : listEvents,
		add : function(node, sEventName, fHandler){
			listEvents.push(arguments);
		},
		flush : function(){
			var i, item;
			for(i = listEvents.length - 1; i >= 0; i = i - 1){
				item = listEvents[i];
				if(item[0].removeEventListener){
					item[0].removeEventListener(item[1], item[2], item[3]);
				};
				if(item[1].substring(0, 2) != "on"){
					item[1] = "on" + item[1];
				};
				if(item[0].detachEvent){
					item[0].detachEvent(item[1], item[2]);
				};
				item[0][item[1]] = null;
			};
		}
	};
}();
addEvent(window,'unload',EventCache.flush);
//-------------- Event Handler ---------------

function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	}
	else {
		window.onload = function() {
			oldonload();
			func();
		}
	}
}

function getElementsByClass(searchClass,node,tag) {
	var classElements = new Array();
	if ( node == null )
		node = document;
	if ( tag == null )
		tag = '*';
	var els = node.getElementsByTagName(tag);
	var elsLen = els.length;
	var pattern = new RegExp('(^|\\s)'+searchClass+'(\\s|$)');
	for (i = 0, j = 0; i < elsLen; i++) {
		if ( pattern.test(els[i].className) ) {
			classElements[j] = els[i];
			j++;
		}
	}
	return classElements;
}

function toggle(obj) {
	var el = document.getElementById(obj);
	if ( el.style.display != 'none' ) {
		el.style.display = 'none';
	}
	else {
		el.style.display = '';
	}
}

function isToggleVisible(obj) {
    var el = document.getElementById(obj);
    return (el.style.display != 'none');
}

function toggleButton(elem) {
	var buttonPrefix = elem.className.substr(0,6);
	var buttonState = elem.className.substr(6,3);
	if (buttonState != 'Off')
		buttonState = buttonState.substr(0,2)
		
	var buttonType = elem.className.substring(buttonPrefix.length+buttonState.length, elem.className.length);
	if (buttonState == 'Off')
		elem.className = buttonPrefix+'On'+buttonType;
	else
		elem.className = buttonPrefix+'Off'+buttonType;
}

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}



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;
}
function ajaxObject(url, callbackFunction) {        
      var that=this;  
      this.params = '';    
      this.updating = false;
      this.abort = function() {
        if (that.updating) {
          that.updating=false;
          that.AJAX.abort();
          that.AJAX=null;
        }
      }
      this.addParameter = function(pName, pValue){
        this.params += '&' + pName + '=' + pValue;
      }
      this.update = function(passData,postMethod) { 
        if (that.updating) { return false; }
        that.AJAX = null;                          
        if (window.XMLHttpRequest) {              
          that.AJAX=new XMLHttpRequest();              
        } else {                                  
          that.AJAX=new ActiveXObject("Microsoft.XMLHTTP");
        }                                             
        if (that.AJAX==null) {                             
          return false;                               
        } else {
          that.AJAX.onreadystatechange = function() {  
            if (that.AJAX.readyState==4) {             
              that.updating=false;                
              that.callback(that.AJAX.responseText,that.AJAX.status,that.AJAX.responseXML);        
              that.AJAX=null;                                         
            }                                                      
          }                                                        
          that.updating = new Date();                              
          if (/post/i.test(postMethod)) {
            var uri=urlCall+'?'+that.updating.getTime();
            that.AJAX.open("POST", uri, true);
            that.AJAX.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
            that.AJAX.send(passData);
          } else {
            var uri=urlCall+'?'+passData+'&timestamp='+(that.updating.getTime())+this.params; 
            that.AJAX.open("GET", uri, true);                             
            that.AJAX.send(null);                                         
          }              
          return true;                                             
        }                                                                           
      }
      var urlCall = url;        
      this.callback = callbackFunction || function () { };
    }