[orca-list] NavigationBundle - bug in headingslist

["Rich Caloggero" <rjc MIT EDU>]

Next/previous heading commands (control+shift+up/down arrows) do not seem to 
move through the entire document on some pages.  All heading nodes do seem 
to show up in the headings list however.

I suspect it has something to do with the content found inside the heading 
tags. I believe the HTML spec says that only text should appear inside 
headings. However, many people include images and line breaks (<br> 
elements). I don't find this objectionable, but my simple-minded code might.

I'm tracking this down now. It does seem to work on straightforward pages 
like www.php.net, or www.mozilla.org, or the few wikipedia articles I've 
tried.

Please let me know what your testing reveals.

-- Rich