[Mediawiki-l] How to disable html expansion in parser function

[Gaetan Lord]

Not sure if my subject is correct, but here's my problem

I try to write a parser function, which return html code ( see below why I
use parser function)
The function receive template variables that create  and return an html
form. In this form returned, I have a small javascript that contains "&".
All the & are converted by & which break the html code.