Event.observe(window, 'load', loadAccordions, false);
	
function loadAccordions() {
   var bottomAccordion = new accordion('vertical_container');

   var nestedVerticalAccordion = new accordion('vertical_nested_container', {
      classNames : {
		 toggle : 'vertical_accordion_toggle',
		 toggleActive : 'vertical_accordion_toggle_active',
		 content : 'vertical_accordion_content'
	  }
   });

   bottomAccordion.activate($$('#vertical_container .accordion_toggle')[0]);
}