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

