sfHover = function() {     
	var sfEls = document.getElementById("snav").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);