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How do you verify cf recaptcha without submitting the form?

I'd like to verify the recaptcha text on the fly, maybe through a function onBlur.  I went through the documentation, but I didn't see anything that would do the work via javascript.  Maybe through coldfusion's ajax form submit.  TIA.  :)

<cf_recaptcha
	privateKey="6LdBw8kSAAAAAFNMQHdJeFyQrv6-BijUqQUj3PI8"
	publicKey="6LdBw8kSAAAAAKiyM1kmXPgTvOzA_XwrcDq_m9vd">

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BRONZE EXPERT

Commented:
i am not familiar with cf_recaptcha but here is a link: http://recaptcha.riaforge.org/
you may already have that and are still wondering how to verify on the fly via ajax

just call a page via ajax when your textbox blurs sending the entered string in and you get back if it matches or not - true or false.

or is your question a bit different?
BRONZE EXPERT
Commented:
afaik, you have submit your function through ajax call and without refresh, you can play around it, otherwise it will reload to check