if(BLOCK_EXTERNAL_LEECHERS && array_key_exists('HTTP_REFERER', $_SERVER) && (! preg_match('/^https?:\/\/(?:www\.)?' . $this->myHost . '(?:$|\/)/i', $_SERVER['HTTP_REFERER']))){
        // base64 encoded red image that says 'no hotlinkers'
        // nothing to worry about! :)
        $imgData = base64_decode("R0lGODlhUAAMAIAAAP8AAP///yH5BAAHAP8ALAAAAABQAAwAAAJpjI+py+0Po5y0OgAMjjv01YUZ\nOGplhWXfNa6JCLnWkXplrcBmW+spbwvaVr/cDyg7IoFC2KbYVC2NQ5MQ4ZNao9Ynzjl9ScNYpneb\nDULB3RP6JuPuaGfuuV4fumf8PuvqFyhYtjdoeFgAADs=");
        header('Content-Type: image/gif');
        header('Content-Length: ' . sizeof($imgData));
        header('Cache-Control: no-store, no-cache, must-revalidate, max-age=0');
        header("Pragma: no-cache");
        header('Expires: ' . gmdate ('D, d M Y H:i:s', time()));
        echo $imgData;
        return false;
        exit(0);