// suckerfish dropdowns from http://www.htmldog.com/articles/suckerfish/dropdowns/
// and alistapart.com
sfHover = function() { 
	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\\b"), ""); 
		}
	}
} 
if (window.attachEvent) window.attachEvent("onload", sfHover);