MovieClip rollover question

This has been bugging me for a while, if I have an event registered to a movieclip it won’t get called if that Movieclip is underneath another movieclip/sprite on the stage

for example I have a timeline with a playhead movieclip and a couple of Mouse listeners attached to the playbar, I wan’t these still to work when the mouse is over the playhead movieclip (which needs to sit over the playbar)

Is there a way to tell flash to ignore the movieclip with regards to Mouse events?

Thanks