function sfHover() {
	var sfEls = document.getElementById("nav").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++)
	{
		sfEls[i].onmouseover=function()
		{
			this.className+="ie_does_hover";
		}
		sfEls[i].onmouseout=function()
		{
			this.className=this.className.replace(new RegExp("ie_does_hover\\b"), "");
		}
	}
}