onRollOver event of parent MC preventing onRollOver of child

programming flash
1

I have a movieClip, which in turn has a nested movieClip. I need each of these to have thier own onRollOver events, the parent movieClip is OK, but the event never fires for the nested movieClip. Can anyone think of a workaround?

My code goes something like this:



attachMovie("mcOne", "mcOne", 100);
mcOne._x = 20;
mcOne._y = 20;
mcOne.onRollOver = function(){
    trace("hi");
};
mcOne.attachMovie("mcTwo", "mcTwo", 100);
mcOne.mcTwo.onRollOver = function(){
    trace("bye");
};

“hi” is output when mcOne is rolled over, as it should, but nothing is output when mcTwo is moused over.