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);