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