$captchaform = new Zend_Form();
        $captchaform->setAction('');
        $captchaform->setMethod('post');
        $captchaform->addElement('captcha', 'captcha', array(
            'label'      => 'Please enter the 5 letters displayed below:',
            'required'   => true,
            'captcha'    => array(
                'captcha' => 'Image',
                'wordLen' => 5,
                'timeout' => 300,
                'font'    => APPLICATION_PATH . '/fonts/arial.ttf',
                'imgDir'  => APPLICATION_PATH . '/../public/img/captcha',
                'imgUrl'  => HOST . '/public/img/captcha'
            )
        ));

        $this->view->form = $captchaform;