public function view()
 {
     $list = SystemCaptchaLibrary::getList();
     $captchas = array();
     foreach ($list as $sc) {
         $captchas[$sc->getSystemCaptchaLibraryHandle()] = $sc->getSystemCaptchaLibraryName();
     }
     $scl = SystemCaptchaLibrary::getActive();
     $this->set('activeCaptcha', $scl);
     $this->set('captchas', $captchas);
 }