sfHover = function() {
		var sfEls = document.getElementById("nav").getElementsByTagName("LI");
		for (var i=0; i<sfEls.length; i++) {
			sfEls[i].onmouseover=function() {
				this.className +=" sfhover";
				a = this.getElementsByTagName("LI");
				for (var j=0; j< a.length; j++) {
					a[j].onmouseover=function() {
						this.className += " sfhover";
					}
					a[j].onmouseout=function() {
						this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
					}
				}
			}
			sfEls[i].onmouseout=function() {
				this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
			}
			
		}
	};

	if (window.attachEvent) window.attachEvent("onload", sfHover);