window.addEvent('domready', function(){
	var handler = $('header_rotation');
	var header = $('header');
	if(handler && header){
		var imgs = handler.getElements('span');
		var random = $random(0, imgs.length-1);
		if(imgs[random]){
			header.setStyle('background-image', 'url('+imgs[random].get('text')+')');
		}
	}

});