Pure JavaScript/jQuery/HTML captcha

Question

can somebody sent me a link, or to provide me an example with pure Javascript/jQuery captcha. Because I can see a lots of examples with PHP/C# ... back end. But I need just

Answer 1

I'm working on an alternative captcha right now. If you'll use only client-side part of it, you'll have what you want assuming you want something just to show in the browser. It's not exactly pure javascript, since it still uses api to get a picture, and looks cool enough :D

http://photocaptcha.cu.cc

It would involve including one script on your side, but it doesn't make much much sense if you don't validate the answers ;)