window.addEvent('domready', function(){
   $('menu').getChildren().each(function(div){
      var h3 = new Element(div.childNodes[1]);
      var ul = new Element(div.childNodes[3]);
      h3.addEvent('click',ul.toggleClass('hidden'));
      //div.childNodes[1].addEvent('click',div.childNodes[3].toggleClass('hidden'));
   });
});