function SetEvent(elem, sEventType, fn) {
	if (elem.addEventListener) { elem.addEventListener(sEventType,fn,false); }
	else if (elem.attachEvent) { elem.attachEvent("on"+sEventType,fn); }
	else {
		var ontype = "on" + sEventType;
		var old = elem[ontype];
		if (old) {
			elem[ontype] = function(event) {
				var res = old(event);
				return fnWrapped(event) && res;
			}
		}
		else { elem[ontype] = fn; }
	}
}