function swapImages() {
    var $active = $('#myGallery a:has(img) > img.active');
    var $next = ($('#myGallery a:has(img.active)').next().find('img').length > 0) ? $('#myGallery a:has(img.active)').next().find('img') : $('#myGallery a:has(img):first > img');
    $active.fadeOut(function() {
        $active.removeClass('active');
        $next.fadeIn(3500).addClass('active');
    });
}