function loadRollOver() {
	var imgs, i, src, qual, pre, img;
	pre = new Array();
	imgs = document.images;
	for(i = 0; i < imgs.length; i++) {
		src = imgs[i].getAttribute("src");
		qual = src.substring(src.lastIndexOf("_"),
		src.lastIndexOf("."));
		if(qual == "_off" || qual == "_on") {
			img = pre.push(new Image());
			pre[img-1].setAttribute("src", src.substring(0,
			src.lastIndexOf("_")) + (qual == "_off" ? "_on" : "_off") + src.substr(src.lastIndexOf(".")));
			if(qual == "_off") {
				imgs[i].onmouseover = function() {
					hoverOn(this);
				}
				imgs[i].onmouseout = function() {
					hoverOff(this);
				}
			}
		}
	}
}
function hoverOn(obj) {
	var src;
	src = obj.getAttribute("src");
	qual = src.substring(src.lastIndexOf("_"), src.lastIndexOf("."));
	if(qual == "_off") {
		obj.setAttribute("src", src.substring(0, src.lastIndexOf("_")) + "_on" + src.substr(src.lastIndexOf(".")));
	}
}

function hoverOff(obj) {
	var src;
	src = obj.getAttribute("src");
	obj.setAttribute("src", src.substring(0, src.lastIndexOf("_")) + "_off" + src.substr(src.lastIndexOf(".")));
}