Eric Martin

add_filter('simplemodal_registration_form', 'mytheme_registration_form');
function mytheme_registration_form($form) {
    $options = get_option('simplemodal_login_options');

    $output = sprintf('
<form name="registerform" id="registerform" action="%s" method="post">
    <div class="title">%s</div>
    <div class="simplemodal-login-fields">
    <p>
        <label>%s<br />
        <input type="text" name="user_login" class="user_login input" value="" size="20" tabindex="10" /></label>
    </p>
    <p>
        <label>%s<br />
        <input type="text" name="user_email" class="user_email input" value="" size="25" tabindex="20" /></label>
    </p>',
        site_url('wp-login.php?action=register', 'login_post'),
        __('Register', 'simplemodal-login'),
        __('Username', 'simplemodal-login'),
        __('E-mail', 'simplemodal-login')
    );

    ob_start();
    do_action('register_form');
    $output .= ob_get_clean();

    $output .= sprintf('
    <p class="reg_passmail">%s</p>
    <p class="submit">
        <input type="submit" name="wp-submit" value="%s" tabindex="100" />
        <input type="button" class="simplemodal-close" value="%s" tabindex="101" />
    </p>
    <p class="nav">
        <a class="simplemodal-login" href="%s">%s</a>',
        __('A password will be e-mailed to you.', 'simplemodal-login'),
        __('Register', 'simplemodal-login'),
        __('Cancel', 'simplemodal-login'),
        site_url('wp-login.php', 'login'),
        __('Log in', 'simplemodal-login')
    );

    if ($options['reset']) {
        $output .= sprintf(' | <a class="simplemodal-forgotpw" href="%s" title="%s">%s</a>',
            site_url('wp-login.php?action=lostpassword', 'login'),
            __('Password Lost and Found', 'simplemodal-login'),
            __('Lost your password?', 'simplemodal-login')
        );
    }

    $output .= '
    </p>
    </div>
    <div class="simplemodal-login-activity" style="display:none;"></div>
</form>';

    return $output;
}