OK I needed the flash fla file to better trouble shoot your problem, it is easier if you can look at a sample file and fix it then just look at the code. As for your problem. I have never heard of doing this with a button in action script 1, or 2. But I think this is possible in the new version of action script 3.0. Here is a link. Sorry I could not help you any further.

http://livedocs.macromedia.com/flex/...html#downState