Adrienne <ar********@sbcglobal.net> wrote:
WAI is more stringent than 508 -
<http://www.jimthatcher.com/sidebyside.htm> provides a detailed list.
As the list shows, the relationship is somewhat more complex.
In effect, 508 is what US legislative bodies regarded as enforceable
by law in the WAI guidelines. This means that it partly demands more
than WAI, since enforceability requires objective checkability.
Moreover, as a whole, 508 is a _legal requirement_ (within its scope of
applicability), whereas WAI is just guidelines, a recommendation by an
industry consortium.
P.S. I don't think Firefox as such has tools for accessibility checking
(or "validation tools" for accessibility). The tools are separately
available from somewhere. Actually, I think the tool referred to is the
"HTML Validator" that is available via Firefox's Tools/Extensions
command. It is in fact _not_ a validator, it contains errors (even in
parsing), and its accessibility checking is a mixture of useful,
useless, and worse than useless features. For example, it reports
alt="" as missing alt text.
--
Yucca,
http://www.cs.tut.fi/~jkorpela/
Pages about Web authoring:
http://www.cs.tut.fi/~jkorpela/www.html 
