public function ajax_checkclicks()
 {
     if (!isset($_REQUEST['nonce']) || !wp_verify_nonce($_REQUEST['nonce'], 'ajax_checkclicks_nonce')) {
         die('Invalid Nonce');
     }
     $clickmonitor = new clickfraudmonitor();
     $result['result'] = $clickmonitor->checkclient();
     $result['message'] = $result['result'] ? '' : 'Error';
     header("Content-Type: application/json");
     echo json_encode(array('clicks' => $result['result'], 'message' => 'checkclick'));
     exit;
 }