Define hit areas for multiple mc's

Hi Guys,

I’m looking for a way to define hit areas for various animated mc’s in the main timeline.
All mc’s take up the whole page size and all hit areas must be active at all time, so defining a hit area inside an mc won’t work as only the top layer will be able to be hit.

How do I define a hit areas out side of the mc’s?

Any idea on how I can accomplish this?

I’m using action script 2.0

cheers for any help