Update image without changing size

Question

the point is that I have to repeat the same swf with different texts and images.

The problem comes when I update the image symbol since the image size is messed up despite having same resolution and aspect ratio.

My question is this, Is there anyway to make Adobe Flash Professional keep the size of the symbol alone while changing the image file ?

UPDATE:

How do I use

var originalWidth:int = button4.width / button4.scaleX;
var originalHeight:int = button4.height / button4.scaleY;

several times with different images ?

Answer 1

This would not work if scaleX or scaleY are zero or nearly so, but otherwise you can get the original width and height as following:

var originalWidth:int = image.width / image.scaleX;
var originalHeight:int = image.height / image.scaleY;