ActionScript for popup menu

I am currently using a popup menu that uses Closed and Open frame labels and invisible buttons that close the menu. ActionScript on the invisible buttons is:
on (rollover) {
I need ActionScript for the popup that will eliminate the use of the invisible buttons/or a whole new popup menu without invisible buttons that is compatible with Flash MX. The invisible buttons interfere with each other because the menu buttons are close together. I am an ActionScript dummy, so please be explicit. Thanks sooooo much for any help!!!