sfHover = function() 
{ 
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);