Animate with different sized picutres

I'm trying to do a sword swinging animation, but each picture is a different size, so the character gets smaller as his sword moves out more, because Gamesalad is readjusting the pictures. Is there a way around this?
Comments
(In your image making app...paste each image on a transparent background layer that is big enough to hold your largest image in the animation...and don't crop them.) then import in GS and put in animation. ???
we had to do this in making animated gifs...
MH
Asymptoteell
I had to learn it!
and you have given me many good tips and heads-ups... and help in your posts!
so Thanx bunches!
MH