$(function(){
	var setImg = '#viewer';
	var fadeSpeed = 3000;
	var switchDelay = 6000;

	$(setImg).children('img').css({opacity:'0'});
	$(setImg + ' img:first').stop().animate({opacity:'1',zIndex:'20'},fadeSpeed);

	setInterval(function(){
		$(setImg + ' :first-child').animate({opacity:'0'},fadeSpeed).next('img').animate({opacity:'1'},fadeSpeed).end().appendTo(setImg);
	},switchDelay);
});