I want to scroll a dozen images across a 780x100 header. So upon page load, the visitor sees 15 seconds worth of the 12 images scrolling across the top of the page. After 15 seconds, the scrolling stops and remains static.

How do I achieve this? (I'm assuming Flash is the best choice?)

Oh, and preferably, I would like to have the Flash file reference the images externally. In other words, I would prefer to have a folder with 12 images, and be able to change them anytime I want without having to modify the native Flash file.

Thanks in advance for your help.