Jumping when space is pressed

I need to know what actionscript(2.0) to use in order to make my movieclip(player) jump when i press space and switch to another movieclip(player_jump) and then switch back to “player” when it reaches the ground. otherwise i won’t be able to get my skateboarder to ollie(just so you know what kind of game it’s going to be).

my movieclips(sorry about the watermarks…)