If frame 3 is non-scrollable, does this mean that your
overall window size is fixed? Because if so, I have a cheater's
workaround that doesn't involve scroll bars.
The thumbnails are in a topic of their own, right? Let's call
it nav.htm (for nav bar). If you figure out how many thumbnails fit
in a visible screen, you can split up nav.htm into separate topics
- nav1.htm, nav2.htm, nav3.htm - that are small enough that you
don't need to scroll.
Then you just put your up and down arrow pictures in and link
to the previous and next nav topics - so nav1.htm has a down arrow
-> nav2.htm, nav2.htm has both a down and up arrow linking to
nav3 and nav1, etc. etc. etc.
Yes, it's a kludge, and it loses a lot of flexibility (when
you add or delete thumbnails in the middle of the list, you have to
shift all the nav topics' content around), but it doesn't require
Javascript!
HTH (or at least sparks an idea or two),
Elisa