sfHover = function() {
         var sfEls = document.getElementsByTagName("li");
         for (var i=0; i<sfEls.length; i++) {
                 sfEls[i].onmouseover=function() {
                         this.className+="sfhover";
		                 }
                 sfEls[i].onmouseout=function() {
				 		this.className=this.className.replace(new RegExp("sfhover\\b"), "");
        		         }
		         }
		}

if (window.attachEvent) window.attachEvent("onload", sfHover);