scrollbar arrows scroll too far on Solaris

[hamilton 2/6/97]
1. Bring up HotJava on Solaris.
2. Load page that's longer than one screenful (example:
   doc:/UsersGuide/custom.html)
3. Click on vertical scrollbar arrow.
   Display should shift one line at a time up or down.

Instead, display shifts about 2 screenfuls (more than clicking
directly in the scrollbar itself). Drag scrollbar
handle to workaround this problem.

In addition, horizontal scrollbar arrows scroll almost as far (~90%) as
clicking directly in the scrollbar. Probably the horizontal scrollbar
arrows should be adjusted to scroll more gradually as well.