var sfHover = function() {
	var nav = document.getElementById("nav");
	if (nav)
		var sfEls = nav.getElementsByTagName("LI");
	else
		return false;
	for (var i=0; i<sfEls.length; i++) {
		//this is for opera who goes crazy if we don't define a width for each li
		newwidth = sfEls[i].offsetWidth - 2;
		sfEls[i].style.width = newwidth;
		
		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);