function initMenu(){
	var node=document.getElementById("nav");
	if(node)var nodes=document.getElementById("nav").getElementsByTagName("li");
	if(nodes){
		for(var i=0;i<nodes.length;i++){
			nodes[i].onmouseover=function(){
				this.className+=" hover";
			}
			nodes[i].onmouseout=function(){
				this.className=this.className.replace(" hover","");
			}
		}
	}
}
if(document.all && !window.opera)attachEvent("onload",initMenu);