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\\s|\\ssfhover)"), "");
		}
	}
	
	if (document.getElementById("topNav")) {
		var sfEls = document.getElementById("topNav").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\\s|\\ssfhover)"), "");
			}
		}
	}
}

if (window.attachEvent) window.attachEvent("onload", sfHover);