Flash Scrollbar - use of mouse roller

I just completed the “Generic Flash Scrollbar” tutorial (http://www.kirupa.com/developer/flash8/scrollbar.htm) and I noticed that the middle mouse wheel does not have an effect on the action of the scrollbar.

I was wondering if there is script that will allow the mouse wheel to work. (i.e. you don’t have to drag or press the buttons, just roll the wheel)

Have you tried to open the scrollface MC in your library and see if it works by making such MC with a rollover?
Just guessing I was just looking at that tutorial myself but didnt download the file