It seems that the page

http://orgmode.org/worg/code/org-info-js/

doesn't display anything sensible.  There's just a heading and a
non-functioning "Show Org Source" button.  But using links found in other
places, it seems possible to read directly some of the contents:

http://orgmode.org/worg/code/org-info-js/index.org.html

Is org-info.js still supported?  It sounds quite handy.  Is there an online
example somewhere of a page that supports the javascript-based
folding/unfolding of the outline, and various keyboard navigation?

Thanks,
Bill