sfHover = function() {
			if (!document.getElementsByTagName) return false;
			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"), "");
				}
			}
			

		}