Ilya,
Thank you. I'll write a plugin, if don't find any existing solution =)
Have a look at the NsToC plugin (http://www.dokuwiki.org/plugin:nstoc). I'm using it for exactly this purpose. Unfortunately you cannot specify the exact header levels to include, but that'a minor problem.
Cheers frank -- DokuWiki mailing list - more info at http://wiki.splitbrain.org/wiki:mailinglist