MC not stretch when scaled?

programming flash
1

hi
first post and its a question
is their a scale function or class so that when i strech a movieclip (while editing in flash and while running the swf)
that the clips specific contents do not stretch to the clip legnth but they “stick” to the clip edge?
like:

Xmovieclip._x = _parent._width - Xmovieclip._width;

but Xmovieclip doesnt scale when its parent is scaled.

thanks for any help!