[F8] cant think of a suitable title but i need some help

[layerburn]

I'm sure there's an easier/better way to do this with actionscript, but here is a rough way to do it without too much script. I've attached an example .fla file for you. I didn't know what version of flash you're running, I'm using
Flash 8. Let me know if you need me to save out to an earlier version. Hope this helps with your project.