title: ReCaptcha response error with ajax
body: <p>I've added a Google ReCaptcha on my website, this is the HTML form as provided by Google:</p>
  
  <pre><code>&lt;script type="text/javascript"
  src="http://www.google.com/recaptcha/api/challenge?k=my_public_key"&gt;
  &lt;/script&gt;
  
  &lt;noscript&gt;
      &lt;iframe src="http://www.google.com/recaptcha/api/noscript?k=my_public_key"
  height="300" width="500" frameborder="0"&gt;&lt;/iframe&gt;&lt;br&gt;
      &lt;textarea name="recaptcha_challenge_field" rows="3" cols="40"&gt;
      &lt;/textarea&gt;
      &lt;input type="hidden" name="recaptcha_response_field"
  value="manual_challenge"&gt;
  &lt;/noscript&gt;
  </code></pre>
  
  <p>And this is my jQuery (note that all the values sent by POST are correct, I've checked them all)</p>
  
  <pre><code>$('#captcha_form_btn').live('click', function () {
      var challenge = $('#recaptcha_challenge_field').val();
      var response = $('#recaptcha_response_field').val();
      var remoteip = $('#remoteip').val();
  
      $.ajax({
          url:'http://www.google.com/recaptcha/api/verify',
          data:'challenge=' + challenge + '&amp;response=' + response + '&amp;remoteip=' + remoteip + '&amp;privatekey=my_private_key',
          type:'post',
          dataType:'jsonp',
          success: function (data) {
              console.log(data);
          }
      });
  });
  </code></pre>
  
  <p>I am using AJAX to verify the client answer to the ReCaptcha, I send client's ip, response, challenge and my private key to get the response from the google API.</p>
  
  <p>However, There's something wrong with API response being received, (I don't exactly know whether is received or not), the firebug javascript console displays a javascript error stating :</p>
  
  <pre><code>ReferenceError: incorrect is not defined
  
  incorrect-captcha-sol
  </code></pre>
  
  <p>In a google API js file, and when I click on "incorrect-captcha-sol" ... it redirects me to a javascript file with these two lines :</p>
  
  <pre><code>false
  incorrect-captcha-sol
  </code></pre>
  
  <p>I think, this is the response which is supposed to be sent back to the client, as json data, but here, I see that it's involved in a JS error in the API js file.</p>
  
  <p>What's wrong with it?</p>