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);