Originally Posted by susan_cassidy
TOCs don't work by referencing locations. They are HTML-based, and reference a tag on the chapter heading. If you run mobi2html (Perl program from MobiPerl), and look at the HTML output, there is usually just a chunk that is the list of hyperlinks forming the TOC.
You can find out where it is by looking at the "Guide" section of the Mobi's OPF file. The table of contents is referenced by the "toc" guide item.