sfHover = function() {

			var sfEls = document.getElementById("nav").getElementsByTagName("LI");

			for (i in sfEls){

				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);