checking captcha using ajax

[fred_symf]

Hello,
I am using the sfCatchaPlugin in a form and I need to check the value of the captcha using ajax as I do not want to use server validation. Could someone tell me how to access this value?
Thanks

[enigmatiqk]

i don't know this plugin, but if you can test his value with ajax, anyone can get capcha value for bot use.

So you don't do it with ajax, it's a non-sens ....