var W3CDOM = (document.createElement && document.getElementsByTagName);

var mouseOvers = new Array();
var mouseOuts = new Array();

function LoadImages() {
	if (!W3CDOM) return;
	var nav = document.getElementById('menu');
	var imgs = nav.getElementsByTagName('img');
	
	for (var i=0;i<imgs.length;i++) {
		//alert(imgs[i].src);
		if (imgs[i].src.indexOf('_over.gif')==-1) {
			
			imgs[i].onmouseover = mouseOver;
			imgs[i].onmouseout = mouseOut;
			
			var suffix = imgs[i].src.substring(imgs[i].src.lastIndexOf('.'));
			
			mouseOuts[i] = new Image();
			mouseOuts[i].src = imgs[i].src;
			
			mouseOvers[i] = new Image();
			mouseOvers[i].src = imgs[i].src.substring(0,imgs[i].src.lastIndexOf('.')) + "_over" + suffix;
			
			imgs[i].number = i;
		}
	}
}

function mouseOver() {
	this.src = mouseOvers[this.number].src;
}

function mouseOut() {
	this.src = mouseOuts[this.number].src;
}