function addEvent(elm, evType, fn, useCapture) {
if (elm.addEventListener) {
elm.addEventListener(evType, fn, useCapture);
return true;
}
else if (elm.attachEvent) {
var r = elm.attachEvent('on' + evType, fn);
EventCache.add(elm, evType, fn);
return r;
}
else {
elm['on' + evType] = fn;
}
}
function getEventSrc(e) {
if (!e) e = window.event;

if (e.originalTarget)
return e.originalTarget;
else if (e.srcElement)
return e.srcElement;
}
function addLoadEvent(func) {
var oldonload = window.onload;
if (typeof window.onload != 'function') {
window.onload = func;
} else {
window.onload =
function() {
oldonload();
func();
}
}
}
var EventCache = function(){
var listEvents = [];
return {
listEvents : listEvents,

add : function(node, sEventName, fHandler, bCapture){
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]);
};

/* From this point on we need the event names to be prefixed with 'on" */
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, false);