sfHover = function() {
	zi = 2000;
	cn = document.getElementsByTagName("div");
	for (n=0;n<cn.length;n++){
		cn[n].style.zIndex=zi;
		zi -= 1;
	}
			
	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);