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);