Adding an table of contents in SGML

I would like to add a table of contents to the top of the 8.4 release
notes:

    http://developer.postgresql.org/pgdocs/postgres/release-8-4.html

Similar to the one at the top here:

    http://developer.postgresql.org/pgdocs/postgres/datatype.html

I tried poking around but didn't find any obvious way to do it.

--
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + If your life is a hard drive, Christ can be your backup. +