How to make a 'Back' button in a SWF file: Like a Web browser's 'Back' button?

programming flash
1

Were making High School class project in Flash Action-Script 2.0

I know this Sounds Easy but: How to make a ‘Back’ button (go back to the frame where the user was just at) in a SWF file: Like a Web browser’s ‘Back’ button: A Web browser’s ‘Back’ button is useful because it remembers each page that was visited, and you can trace your path back through pages.

I posted my Question On several forms: people are giving me Action Script 3.0

I made my Problem into a web-page (very detailed)

        Note: This program must Action Script 2.0

http://chrislequire.com/ftzhelp

I hope you can help me on this matter.

Thank you,
- Chris