startList = function() {
	if (document.all&&document.getElementById) {
		navRoot = document.getElementById("nav");
		lis = navRoot.getElementsByTagName("li"); 
		for (i=0; i<lis.length; i++) {
			node = lis[i];
			if (node.nodeName=="LI") {
				node.onmouseover=function() { this.className+=" over"; }
				node.onmouseout=function() { this.className=this.className.replace(" over", ""); }
			}
		}
	}
}
window.onload=startList;