* Fix up the TOC markup a bit.

* Fix up the TOC markup a bit.
Moved the outer box back from <div> to <table>, as the inline-size
workarounds would break a lot of pages which use floated-right
sidebars.

Make TOC styles available as a class .toc, so the #toc doesn't need
to be (ab)used to create alternates with the same style.