window.addEvent('domready', function(){
	var duration = 6000; // Change effect duration
	var Fxduration = 3000; // Change effect duration
	
	var images = $$('#header_picture img');
	if(images.length>1){
		var current = 0;
		images.each(function(img, idx){
			img.set('morph', {'duration': Fxduration});
			if(idx>0){
				img.setStyle('opacity', 0);
			}else{
				img.setStyle('opacity', 1);
			}
		});
		(function(){
			images[current].morph({'opacity': [1,0]});
			current = current+1<images.length?current+1:0;
			images[current].morph({'opacity': [0,1]});
		}).periodical(duration);
	}
})