Rollovers have stop working!

Hi

I’ve been deliberating over a few ways to best do a slide out navigation menu using flash, I have got the sub menu to succesfully slide out and slide back in again when the mouse goes off the source button. However, I needed to add a larger hit area to the source button so that the menu wouldnt roll back when you are on the sub menu. However, this appears to have stopped the rollover effects on the buttons on the sub menu from working. Any ideas why this is and can anyone suggest a work around, bearing in mind my action script skills are limited!

cheers,

andy (flash mx 2004)

ps - .fla attached