Welcome to the forum.
When you say delete the index, I think you mean delete the
TOC?
This is a known problem with Firefox. You have books with
links to topics. If you remove those and have the required topic
immediately below the book, the problem will go away.
See other posts and my site.
Please post a bug report as Adobe need to fix this.
http://www.adobe.com/cfusion/mmform/index.cfm?name=wishform
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