function slide() {
    $("#carrouselContainer div:nth-child(2) div.overlayImage").fadeOut(500, function() {
        $('#carrouselContainer').animate({
            left: '-1920px'
        }, 2000, function() {
            var container = $('#carrouselContainer');
            var old = container.children(":first").detach();
            container.css('left', '-960px');
            container.append(old);
            $("#carrouselContainer div:nth-child(2) div.overlayImage").fadeIn(500, function() { 
                setTimeout(slide, 3000);
            });
        });
    });
}

$(document).ready(function () {
    setTimeout(slide, 3000);
});