I have a problem with my hittest,

here's a link to the file: http://rapidshare.com/files/11597796...mness.fla.html

the problem is, whenever the first duplicated movieclip (or original movieclip) leaves the stage, the hittest reacts everywhere on the screen, not only on the enemies.

the duplicated enemies called "enemy" come from the left at a random _y axis.

and the hittest is on an invisible movieclip wich is attached to the mouse (its below the rocket on the stage).

can anyone help me out here?