function setup_topmenu(){
    Event.observe(window, 'load', function() {
        $$('#topmenu .menuitem .menucontents a').each(
          function(item){
              Event.observe(item.id, 'mouseover', function(){
                 var parentitem = item.up(1);
                 parentitem.removeClassName('menuitem');
                 parentitem.addClassName('menuitem_over');
              });
              Event.observe(item.id, 'mouseout', function(){
                 var parentitem = item.up(1);
                 parentitem.removeClassName('menuitem_over');
                 parentitem.addClassName('menuitem');
              });
          }
        );
    });
}

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\\b"), "");
		}
	}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);