function enterObject()
 {
     global $REX;
     require_once realpath(dirname(__FILE__) . '/../../ext/captcha/class.captcha_x.php');
     $captcha = new captcha_x();
     $captchaRequest = rex_request('captcha', 'string');
     if ($captchaRequest == 'show') {
         while (@ob_end_clean()) {
         }
         $captcha->handle_request();
         exit;
     }
     if ($this->params['send'] == 1 & $captcha->validate($this->getValue())) {
         if (isset($_SESSION['captcha'])) {
             unset($_SESSION['captcha']);
         }
     } elseif ($this->params['send'] == 1) {
         // Error. Fehlermeldung ausgeben
         $this->params['warning'][$this->getId()] = $this->params['error_class'];
         $this->params['warning_messages'][$this->getId()] = $this->getElement(2);
     }
     if ($this->getElement(3) != '') {
         $link = $this->getElement(3) . '?captcha=show&' . time() . microtime();
     } else {
         $link = rex_getUrl($this->params['article_id'], $this->params['clang'], array('captcha' => 'show'), '&') . '&' . time() . microtime();
     }
     $this->params['form_output'][$this->getId()] = $this->parse('value.captcha.tpl.php', array('link' => $link));
 }
    function enterObject(&$email_elements, &$sql_elements, &$warning, &$form_output, $send = 0)
    {
        global $REX;
        require_once realpath(dirname(__FILE__) . '/../../ext/captcha/class.captcha_x.php');
        $captcha = new captcha_x();
        $captchaRequest = rex_request('captcha', 'string');
        if ($captchaRequest == "show") {
            while (@ob_end_clean()) {
            }
            $captcha->handle_request();
            exit;
        }
        $wc = "";
        // hier bewusst nur ein "&" (konditionales und, kein boolsches und!)
        if ($send == 1 & $captcha->validate($this->value)) {
            // Alles ist gut.
            // *** Captcha Code leeren, nur einmal verwenden, doppelt versand des Formulars damit auch verhindern
            if (isset($_SESSION['captcha'])) {
                unset($_SESSION['captcha']);
            }
        } elseif ($send == 1) {
            // Error. Fehlermeldung ausgeben
            $this->params["warning"][$this->getId()] = $this->elements[2];
            $this->params["warning_messages"][$this->getId()] = $this->elements[2];
            $wc = $this->params["error_class"];
        }
        $link = rex_getUrl($this->params["article_id"], $this->params["clang"], array("captcha" => "show"), "&");
        if ($wc != '') {
            $wc = ' ' . $wc;
        }
        $form_output[] = '
			<p class="formcaptcha" id="' . $this->getHTMLId() . '">
				<label class="captcha' . $wc . '" for="el_' . $this->id . '">' . htmlspecialchars($this->elements[1]) . '</label>
				<span class="as-label' . $wc . '"><img  src="' . $link . '" onclick="javascript:this.src=\'' . $link . '&\'+Math.random();" alt="CAPTCHA image" /></span>
				<input class="captcha' . $wc . '" maxlength="5" size="5" id="el_' . $this->id . '" name="' . $this->getFormFieldname() . '" type="text" />
			</p>';
        // Ende
    }