[jQuery] add a child node using jQuery

[jQuery] add a child node using jQuery

Hi,
i have a <table> tage and i would like to add a <thead> node using jQuery.
what is the best method in order to get <table><thead>...</thead></table> ?
thx<br clear="all">
--
Alain
-----------------------------------------------------------
Windows XP x64 SP2 / Fedora 10 KDE 4.2
PostgreSQL 8.3.5 / MS SQL server 2005
Apache 2.2.10
PHP 5.2.6
C# 2005-2008