Help with how to link a lack of MouseEvents to Timer resent

Hi-

Can someone help me?

Somehow I need Flash to detect if/when the mouse does NOT move over a course of time, so that it can begin a countdown to replay an intro movieclip I need to play before a graphical menu loads.

That is to say, if no one moves the mouse in order to access any of the menu items (say within a minute of the menu_mc loading), the script runs and the intro_mc plays over again. Every time the mouse moves, the script should reset (so that it doesnt go back and replay while the viewer is moving the mouse).

In the attached example, I’ve labeled the parts, where the light green ball represents the intro and the static dark green ball represents the menu. It stays on the menu page with the following script (which I am obviously unaware of how to modify to meet the above criteria).

stop();

function startOver() {
    clearInterval(id);
    gotoAndPlay("start");
}
var id = setInterval(startOver, 10000);

Thanks so much, I am totally lost