jsHover = function() {
	if(document.getElementById("nav")){
		var hEls = document.getElementById("nav").getElementsByTagName("LI");
		for (var i=0, len=hEls.length; i<len; i++) {
			hEls[i].onmouseover=function() { this.className+=" over"; }
			hEls[i].onmouseout=function() { this.className=this.className.replace(" over", ""); }
		}
	}
}
if (window.attachEvent && navigator.userAgent.indexOf("Opera")==-1) window.attachEvent("onload", jsHover);