if (document.images)
{
  button= new Image(140,45); 
  button.src="http://test.tedlock.com/images/button.gif"; 

  hover= new Image(140,45); 
  hover.src="http://test.tedlock.com/images/hover.gif"; 

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