Interactive Image Panning - question re: tutorial written by kirupa, by Krilnon

I’m not sure if this is in the right forum, sorry first time here.

I’ve been looking at the tutorial provided by Krilnon on 02 July 2006 named Interactive image panning. A very neat little tute, but I’d like to develop the actionscript to suit a project I’m currently working on. Unfortunately my understanding of Actionscript is poor…

In the original tutorial Krilnon uses Stage.width to keep the scrolling image within the boundries of the stage.

I would like to use an image which is the same width as the stage and get it to scroll only marginally. The image is behind a mask which it must scroll within the boundries of.

To make things a little bit more complicated, I actually have 3 images behind a mask which I’d like to scroll at different speeds.

I’ve uploded a swf which illustrates the idea, but uses different actionscript and (as you can see) the images move whereever the mouse goes with no constraint.

I think what I need to do is replace the Stage.width in Krilnon’s code with the dimensions of the mask, but I don’t know how to do this.

Can anyone help???