Mouse listener while over an object (like a swf)?

I noticed that the mouse event I set up for firefox with javasc开发者_运维技巧ript (document.onmousemove=move;) works fine whenever the mouse is not over an object such as a swf file

How can I get it so that it will work always, or even for the swf exclusively?

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I don't think events from a Flash object will bubble up to the DOM because they are in different contexts.