could anyone point me in the right direction for how to do this effect with the scrolling of the images

I am loading image to a placeholder with the name of "two" in this example. I have 1-4 though. Instead of the images just appearing could anyone help me out on how to make them scroll out like the above example?

onEnterFrame = function() {
loadMovie("http://www.URL/image2.jpg", "two")
delete this.onEnterFrame