sfHover = function() {
     var sfEls = document.getElementById("hnav").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);