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