function popup(mylink, windowname, width, height)
		{
		if (! window.focus)return true;
		var href;
		if (typeof(mylink) == 'string')
		   href=mylink;
		else
		   href=mylink.href;
		
		window.open(href, windowname, 'width='+width+',height='+ height +',scrollbars=yes');
		return false;
		}

		sfHover = function() {
		    var sfEls = document.getElementById("navbar").getElementsByTagName("li");
		    for (var i=0; i<sfEls.length; i++) {
		        sfEls[i].onmouseover=function() {
		            this.className+=" hover";
		        }
		        sfEls[i].onmouseout=function() {
		            this.className=this.className.replace(new RegExp(" hover\\b"), "");
		        }
		    }
		}
		if (window.attachEvent) window.attachEvent("onload", sfHover);