Prevent page scrolling with arrow keys?

Is this a script out there that will prevent the user from scrolling the page (page up & down) when they press the UP and DOWN arrow keys?

I have created a car game, but the only problem is the page scrolls when the player presses the arrow keys!

I’ve never had this problem before, usually once you activate the Flash movie then page scrolling is disabled.

Thanks in advance.

EDIT:
Simply put…

When I use my arrow keys to control the car, the page in the browser scrolls up/down.

The problem with this is when you press it a few times, the page scrolls enough where you can only see half of the Flash movie or something and it ruins the game experience.

Note: When I press the UP arrow key, the car moves forward AND the page scrolls. So it’s not a matter of focusing on the Flash movie.