var accordion  = null;

window.addEvent('domready', function() {	 
		accordion = new Accordion('a.tab', 'div.tab', {
		onActive: function(toggler) {			
			toggler.setStyles({
				background: '#d53043',
				color: '#fff'
			});			
		},
		onBackground: function(toggler) {
			toggler.setStyles({
				background: '#ddd',
				color: '#222'				
			});			
		}
	});
	
	//tab( 0 );
});

function tab( index ){
	accordion.display(index);
}