window.addEvent('domready', function() {
  //create our Accordion instance
  var myAccordion = new Accordion($('lapok'), 'li.toggler', 'ul.element', {
    opacity: 0,
    onActive: function(toggler, element){
      toggler.removeClass('togglerBg')
      toggler.addClass('togglerAc');
    },
    onBackground: function(toggler, element){
      toggler.removeClass('togglerAc')
      toggler.addClass('togglerBg');
    }
  });
});