/* Getters */
function gId(id) {return document.getElementById(id);}
function gTag(node, tag) {return node.getElementsByTagName(tag);}

function gClass(node, classname) /* from Snook.ca */
{
    var a = [];
    var re = new RegExp('\\b' + classname + '\\b');
    var els = gTag(node, '*');
    for(var i=0,j=els.length; i<j; i++)
        if(re.test(els[i].className))a.push(els[i]);
    return a;
}

/* Stop Default Action - From openjs.com */
function stopDef(e)
{
	if(!e) {var e = window.event;}
	e.cancelBubble = true;
	e.returnValue = false;
	if (e.stopPropagation)
	{
		e.stopPropagation();
		e.preventDefault();
	}
	return false;
}

/* Add Event - Dustin Diaz (http://www.dustindiaz.com/rock-solid-addevent/) */
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];
	}
}

if(!EventCache)
{
	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);