sfHover = function() {
try {
    var sfEls = document.getElementById("topmenu").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"), "");
      }
    }
} catch(e) { }
  }
  if (window.attachEvent) 
  {
     window.attachEvent("onload", sfHover); 
  }