title: How to GET reCAPTCHA picture address?
body: <p>This is my idea:</p>
  
  <ol>
  <li><p>I get this address from source, for example: <code>http://api.recaptcha.net/challenge?k=6Lc_Wb0SAAAAAPpDWSnsxg7rFxSJT46Wmic3Ximb</code></p></li>
  <li><p>Then I get "challenge" from this site, for example: <code>challenge : '03AHJ_VuumDpsD-dz-rSeL_Vyd5fUqHMJLNtlpiyaEq0RzDhsaNTWTydaOcYk5cdRX55C6VyaojWJwCa6T6PF8LF4Io5NUC09Kj0HRNczh9tJXBsrx26BcfBtrwvPabvbR_SnJXdmc9YS2L76PqI9EdtfXPhhCV9V2jw'</code></p></li>
  <li><p>Then I get address of picture, for example: <code><a href="http://www.google.com/recaptcha/api/image?c=03AHJ_VuumDpsD-dz-rSeL_Vyd5fUqHMJLNtlpiyaEq0RzDhsaNTWTydaOcYk5cdRX55C6VyaojWJwCa6T6PF8LF4Io5NUC09Kj0HRNczh9tJXBsrx26BcfBtrwvPabvbR_SnJXdmc9YS2L76PqI9EdtfXPhhCV9V2jw" rel="nofollow">http://www.google.com/recaptcha/api/image?c=03AHJ_VuumDpsD-dz-rSeL_Vyd5fUqHMJLNtlpiyaEq0RzDhsaNTWTydaOcYk5cdRX55C6VyaojWJwCa6T6PF8LF4Io5NUC09Kj0HRNczh9tJXBsrx26BcfBtrwvPabvbR_SnJXdmc9YS2L76PqI9EdtfXPhhCV9V2jw</a></code></p></li>
  </ol>
  
  <p>But there is a problem - pic is other than I have to write. Can you tell me how I can get oryginal address?</p>