Tidy and Gecko DOM

Hello,

I'dl like to configure Tidy so that its DOM representation of any HTML 
document is exactly the same than the Gecko DOM 
(http://developer.mozilla.org/en/docs/Gecko_DOM_Reference).

For example, the Gecko DOM always includes a <tbody> tag between a 
<table> and its first <tr>.

Is it possible and how : only by the way of the configuration file or by 
modification of source code ?

Thanks for your help,

-- 
Fabrice Estiévenart
Chercheur
CETIC
Rue Clément Ader, 8
B-6041 Gosselies
Tél : +32 71 91.98.10
Fax : +32 71 91.98.02