I'm guessing that when you requested that the URL
www.ssec.wisc.edu/visad be removed, everything under
that was removed as well. Somewhere along the line,
the link in www.ssec.wisc.edu/~billh/visad to the
javadocs was changed.
I know that the VisAD Javadocs can be found online at:
But they are not currently up to date...
Last I heard, Dave was planning to look into why SourceForge and the
Javadocs weren't being updated properly by his nightly script, but was
waiting for TC to fix a problem with sarah.ssec.wisc.edu first.
Stuart, in the meantime, you can always build the Javadocs yourself from
source with "make docs" and view them locally.