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