sfHover = function() {
	var sfEl = document.getElementById("nav");
	if(sfEl!=null)
	{	
		sfEls = sfEl.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);