Need help with mapping layers

OK, so I need help.

I’m making a basic RPG game in Flash 8 and I placed the map layer over top of the Player layer so that when he collided with trees he would go under them. But when I put rocks into the map, he also went under them, which didnot look right, so I tried to put the rocks and trees onto different layers. But now the rocks move and the trees don’t, instead the trees just move with the player.:frowning:

If you know any code to help me, please do so.

Cheers