Review comments on PDF1

1. Is the word "tabbable" in the test a real word? (I know jquery is
using it as a selector)
2. The test file contains a pdf and a word doc. The pdf seems to have
the appropriate alt text (though I can only inspect it in adobe reader - it
has a good tooltip). The word doc doesn't seem to have the right alt text
(at least not in the appropriate word 2007 properties dialog).
3. PDF
<http://partners.adobe.com/public/developer/en/pdf/PDFReference16.pdf#page=8
92> Reference 1.6, 10.8.2 Alternate Descriptions doesn't open on my
computer (though it might be a problem on my end - I'm not sure).
 
Everything else is dandy.