var changeImg = function() {
	if (pos==3) pos=0;
	img = $(document.body).getElement('div.content').getElement('img');
	newImg = path+"img"+pos+".png";
	new Asset.images(newImg, {onComplete: function() {
		img2 = new Element('img', {'src': newImg, 'styles': {'position': 'absolute', 'opacity': 0, 'top': 0}}).inject(img, 'before');
		new Fx.Tween(img2, {duration: 1000}).start('opacity', 1);
		new Fx.Tween(img, {duration: 1000, onComplete: function(){
			img.destroy();
			img2.setStyle('position', 'relative');
			changeImg.delay(5000);
			pos++;
		}}).start('opacity', 0);
	}});
}

var pos = 1;
var img;
var path = '/images/elements/banner/';
window.addEvent('domready', function() { changeImg.delay(5000); })