sfHover = function(){
	var menuids = ['nav','sort_nav'];
	for(var i=0; i<menuids.length; i++){
		menuid = menuids[i];
		if(document.getElementById(menuid)){
			var elems = document.getElementById(menuid).getElementsByTagName("li");
			for(var i=0; i<elems.length; i++) {
				elems[i].onmouseover = function() {
					this.className += " hover";
				}
				elems[i].onmouseout = function() {
					this.className = this.className.replace(new RegExp(" hover\\b"), "");
				}
			}
		}
	}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);