function initMouseOvers() {
	var links = document.getElementsByTagName("img");
	for (var i=0;i<links.length;i++) {
		if (links[i].name.toLowerCase() == "mouseover") {
			var moSrc = links[i].src.substring(0, links[i].src.lastIndexOf('.'));
			moSrc += '_over.gif';
			links[i].moSrc = moSrc;
			links[i].origSrc = links[i].src;
			links[i].onmouseover = function () {
				this.src = this.moSrc;
			}
			links[i].onmouseout = function () {
				this.src = this.origSrc;
			}
		}
	}
}

function addEventSimple(obj,evt,fn) {
	if (obj.addEventListener)
		obj.addEventListener(evt,fn,false);
	else if (obj.attachEvent)
		obj.attachEvent('on'+evt,fn);
}

function removeEventSimple(obj,evt,fn) {
	if (obj.removeEventListener)
		obj.removeEventListener(evt,fn,false);
	else if (obj.detachEvent)
		obj.detachEvent('on'+evt,fn);
}

addEventSimple(window,'load',initMouseOvers);