window.addEvent('domready', function(){
var accordion = new Accordion('h3.atStart', 'div.atStart', {
	opacity: true,
	onActive: function(toggler, element){
		toggler.setStyle('background-color', '#ffff3f');
	},
 
	onBackground: function(toggler, element){
		toggler.setStyle('background-color', '#aaaaaa');
	}
}, $('accordion'));
});