Trying to find image rotation script that does everything I need

I have been trying to find a image rotation script that does everything I need. But I seem to find one that I think will work but then discover that it isn’t quite what I need for my application.

I would like to able to have unlimited images (within reason) and the ability to have a link and alt text associated with each image. I will hopefully have 6 ad spots on my site that I would like to rotate through 20+ ads though. Attached is an example of what I would like the final product to look like. If anyone knows of a script that I could use to carry this out cleanly please let me know. Thanks in Advance!

Mark