Refs #7681.  Tweak test_scroll.html to work with Windows XP style scrollbar sizes using IE6 & 7.
Refs #7681.  Tweak test_scroll.html to work with Windows XP style scrollbar sizes using IE6 & 7.

git-svn-id: 674a2d6b1e32e53f607eb824547723f32280967e@21045 560b804f-0ae3-0310-86f3-f6aa0a117693

Sam-Cummins/delite,Sam-Cummins/delite,kitsonk/delite,harbalk/delite,harbalk/delite,kitsonk/delite