window.addEvent('domready',function(ev){
	if ($$('#head img').length >= 1) {
		$('head').setStyle('height',$('head').getFirst().getAttribute('height') + 'px');
		$$('#head img').each(function(node,idx){
			node.setStyle('position','absolute');
			if (idx > 0) {
				node.setStyle('display','block');
				node.setOpacity(0);
			}
		});
		advanceSlide.delay(5000,$('head').getFirst());
	}
});

function advanceSlide() {
	var nextNode = this.getNext() || this.getParent().getFirst();
	nextNode.setStyle('z-index',100);
	nextNode.effect('opacity',{onComplete:function(el){
		var prevNode = el.getPrevious() || el.getParent().getLast();
		prevNode.setOpacity(0);
		el.setStyle('z-index','');
		advanceSlide.delay(5000,el);
	}}).start(0,1);
}