AS2 Scroller that resizes

1

I am having a lot of trouble making this scroller work. My understanding of math is really letting me down in this instance.

What I am trying to do:

  • Make a scroller that tweens on a vertical _y axis.
  • Tweens with mouse movement.
  • The scroll area changes height on stage resize.

This is very similar to what i want to do:
http://www.kirupa.com/developer/flash8/interactive_image_pan.htm

I have included my AS2 class and .fla file. The .fla is important becuase this needs to work in the structure of my site.

Thanks in advance.