Can some one explain me what went wrong?

i build a very simple maze with getBounds(),
when the mc hits the wall he stopes, but i added 3 lines and he wont get throw them… what wnt wrong???
here is the swf:
http://img468.imageshack.us/my.php?image=try23xa.swf
here is the fla:
http://planet.nana.co.il/ivrey56/try2.fla