Apparently the Firefox Location bar problem that's been bedeviling me is a known bug in Firefox and will be fixed in 1.1. Hewnce the fix is to upgrade to a Firefox 1.1 nightly build, where indeed everything (or at least this one issue) seems to just work. Credit (and a free book) to Simon Montagu for finding this.
John Cowan has posted the third release candidate of TagSoup, an open source, Java-language, SAX parser for nasty, ugly HTML. I use TagSoup to convert JavaDoc to well-formed XHTML. RC3 improves handling of enbedded CSS and JavaScript, and move from java properties to comman line options. TagSoup is dual licensed under the Academic Free License and the GPL.