The ZscrollBar script! Tested in all the 4.0+ browsers, should even work in Opera!
I've modified the code in several ways from the first test version you received,
hope the test worked out OK for you? I recently added the "click and hold" function
for the up and down arrows, and made several modifications to eliminate the
annoying "onStartDrag()" functionality built into windows.
One of the main things I modified was the variable section. You now have access to
these variables so that the script can be as multi-functional as possible. (It's
already preconfigured to meet the needs of your client.)
The ZscrollBar is only visible if there is enough content to justify it!
Go to ZscrollBar visible.