gofixed

This javascript function fixed the header of a table by adding the "fixed" class

FAQ

How I use it? Easy!

In your header o footer put this javascript code:

$(document).ready(function() { goheadfixed('table.fixed'); });

..and in your table must add the class "fixed"

This function depends on some library? Yes, it depends of JQUERY >= 1.7

Exists a demo? http://jsfiddle.net/gonzalesc/USbUG/