I generated the imagemap links automagically, and copy'n'pasted selected lines from the output. See the output and the code to generate it. The "tilenames.txt" required by it was generated also automagically from the NetHack source by doing the following in win/share/ -directory (on a linux box):
grep -h ^# monsters.txt objects.txt other.txt | cut -d'(' -f2- | sed -e 's/)$//'
--paxed 11:50, 24 May 2008 (UTC)