window.addEvent('domready',function(){
  var accordion = new Accordion('h3.atStart', 'div.atStart', {
    opacity: true,
    onActive: function(toggler, element){
      //toggler.setStyle('display', 'none');
    },
    onBackground: function(toggler, element){
      //toggler.setStyle('display', 'block');
    }
  }, $('accordion'));
});