sfHover = function() {
	var sfTopEls = document.getElementById("topMenuBlock").getElementsByTagName("LI");
	var sfBottomEls = document.getElementById("bottomMenuBlock").getElementsByTagName("LI");
	
	// Top Elements
	for (var i=0; i<sfTopEls.length; i++) {
		sfTopEls[i].onmouseover=function() {
			this.className+=" sfhover";
		}
		sfTopEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}
	
	// Bottom Elements
	for (var i=0; i<sfBottomEls.length; i++) {
		sfBottomEls[i].onmouseover=function() {
			this.className+=" sfhover";
		}
		sfBottomEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}

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