Modify TextNode inner text

Hi! Is there any possible way using tidy lib (w/ sources) to alter the
content of the an existing TextNode? Like the one of the TextArea or Option
objects:
 
 
<textarea name="text1">stuff</textarea>
<select><option value="v1">stuff</option></select>
 
 
I am not very familiar with architecture and use of Lexer object, with
memory allocation for each object. I tried to dig into it, but couldn't get
it so far!
 
Bests,
Dragos CIULICA.
 

-- 
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.338 / Virus Database: 267.9.5/58 - Release Date: 25.07.2005