Movieclip on rollover a button

I’ve a button “our services”

Please chk the attachment.

on rollover this btn, a movieclip activate containing other sub-buttons: 1, 2, 3 and so on:–

but when i roll out it again disappears.

I want that it should stop when we roll over once so that user can click on sub buttons also.

Secondly, I want to make a dynamic text where i can put the description of the sub tabs.