var scroll;
function begin()
{
	var childCount = $('promo_content').getElements('div[id^=promo_]');     
    if (childCount.length > 1)
    {
        scroll = new Fx.Scroll('promo_container', {wheelStops: false, duration: 500, transition: Fx.Transitions.Quad.easeInOut }); 
		toNext();
	}

	$$('#nav_promo li a').each(function(el) {
		el.addEvent('click', function(e) {
			e.stop();
			scroll.toElement(el.get('rel'));
		})	
	})
}

function toNext(item)
{
    var target = (item) ? item.getNext('div[id^=promo_]') : $('promo_content').getFirst('div[id^=promo_]');
    if (target)
    {
        scroll.toElement(target);
        toNext.pass(target).delay(5000);
    }
	
    else
    {
        toNext();
    }

}

window.addEvent('domready', begin);