Resize an animation (not scale to fit browser)

Hi:

I'm thinking the answer is simple, but I can't find it anywhere. I made a complicated animation, but realize I made it much too large.

I would like to select all and just shrink the whole damn thing, including the stage, say by 50%., keeping my motion paths intact (and scaled down).

Is this possible? O r do I need to creeate a new animation at a smaller size.

Thanks!