Non-scrolling portions of my CGI generated tables

Hello,

I have been trying to solve this problem for months with little luck, so I
am looking for some help in this forum.

I have a complicated CGI script that accesses a database and returns
information in a table format (e.g. header and body).  I would like to have
the table header fixed within a browser window, and have the scroll bar only
scroll through the body.

What is a good way to do this?

I thought about frames, one frame for header and one for body.  But frames
are limited to pointing each of the frames to a url.  This requires me to
have one URL for the header and one for the body.  This would imply that my
CGI script runs twice to get the same answer.  This is bad, as my CGI script
takes a while to calculate the table.

Ideally, I could have one CGI script return HTML one time that has sections
specified as non-scrolling.  Does anyone know how to do this?

--len