fixed "AppStructure-visibility2.htm" on FTP

<!-- Lofton, Apr 3, 2006: Fixed missing QUOTE in <img>, which was messing 
up table structure -->

By the way, I had thought that this test was supposed to be a non-DOM test, 
simply checking support of the 'visibility' ApsAttr, in the style of the 25 
(pre-DOM) Dynamic tests.

-Lofton.