sfHover = function() {
    var sfEls = document.getElementById("navsite").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);
  else { //IE 5.2 Mac does not support attachEvent
    var old = window.onload; 
    window.onload = function() { if (old) old(); sfHover(); } 
  }