Mine

var Navigation = {
		
		start: function(){
			Navigation.initialize();
		},
		
		initialize: function(){
			var clickItems = $$('.wrapper .toggler');
			clickItems.each(function(item,i){
				item.addEvent('click', function(e){
					var accordion = $(item.id+' #accordion');
					alert(accordion);
					if(accordion.getStyle('display') == 'none')
					{
						accordion.setStyle('display', 'block');
					}
					else
					{
						accordion.setStyle('display', 'none');
					}
					
				});
			});
		}
	
};
window.addEvent('domready',Navigation.start);