$(function(){ var setImg = '#viewer'; var fadeSpeed = 1500; var switchDelay = 5000; $(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); });