ÿþsfHover = function() {

var sfEls = document.getElementById("header").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);