function menuInit() {

  if (!window.XMLHttpRequest)   
  {
      $$('.menu > li').each( function(el) {
        Event.observe(el, 'mouseover', function(){
            el.addClassName('active');
          });
 
          Event.observe(el, 'mouseout', function(){
            el.removeClassName('active');
          });
 
      });
	  
      $$('label').each( function(el) {
        Event.observe(el, 'mouseover', function(){
            el.addClassName('hover');
          });
 
          Event.observe(el, 'mouseout', function(){
            el.removeClassName('hover');
          });
 
      });	  
	  
  }   
}

Event.observe(window, 'load', menuInit, false);