Need to recreate movieclip button

I need to recreate 2 buttons inside an mc or a main button in AS 2.0

best way to understand is look here

http://www.pepbonet.com/index.html

rollover “portfolio” then rollover faith in chaos

you will see a set of buttons in what looks like the main button overstate

I know this was done with a javascript menu in this case but there has to be a way to do it in Flash

I need to create that overstate with accessible buttons inside.