var menuids=["menu-top"] 

function buildsubmenus(){
for (var i=0; i<menuids.length; i++){
  var litags=document.getElementById(menuids[i]).getElementsByTagName("LI")
    for (var t=0; t<litags.length; t++){
    litags[t].onmouseover=function(){
    this.className+=" sfhover";
    }
    litags[t].onmouseout=function(){
    this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
    }
    }
  }
}
if (window.attachEvent) window.attachEvent("onload", buildsubmenus);