Tab script

I have some buttons that look like square tabs and I want to use a funtion to tell a movie clip to move and scale the the same size as the button that was just clicked. I can get the movie to move correctly in x and y but the scaling is not working.

movie refers to the name of the button being clicked. pointer is the movie that moves.

function Change(movie:MovieClip) {
pointer._y = movie._y;
pointer._x = movie._x;
pointer._yscale = movie._yscale;
pointer._xscale = movie._xscale;

Any suggestions?