dwHover = function() {
	var dwEls = document.getElementById("nav").getElementsByTagName("LI");
	for (var i=0; i<dwEls.length; i++) {
		dwEls[i].onmouseover=function() {
			this.className+=" dwhover";
		}
		dwEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" dwhover\\b"), "");
		}
	}
}
if (window.attachEvent) window.attachEvent("onload", dwHover);