Help: How to ignore mouse events from children

Hi,
I am having a problem with mouse events which I would appreciate any help with:

In my game there is a podium which at some point can have people on it which are added as children. There is a mouseover event listener on the podium to bring up a rollover box. I only want this rollover to appear when the mouse is over the podium graphic.

I have the following setup:

Podium Sprite:
(Children )[INDENT]-> graphic:Sprite ( visuals for the podium )
-> person:Sprite ( a person on the podium)INDENT -> graphic:Sprite ( visuals for person)[/INDENT][/INDENT]Now the problem is, the person graphic overlaps and extends beyond the podium one causing the rollover area to popup when the mouse is outside of the podium area if its over the perseon sprite.

I have tried mouseChildren = false on the podium but I have found that this just makes the target of the event to be the podium rather than person.

Thank you for any tips on this.