sfHover = function() {
			if( document.getElementById("mainNavList") == null ) return;
			var sfEls = document.getElementById("mainNavList").getElementsByTagName("LI");
			for (var i=0; i<sfEls.length; i++) {
				sfEls[i].onmouseover=function() {
					this.className+=" tabhover";
				}
				sfEls[i].onmouseout=function() {
					this.className=this.className.replace(new RegExp(" tabhover\\b"), "");
				}
			}
		}
		if (window.attachEvent) window.attachEvent("onload", sfHover);