public static function showUrlTypeMsg($params)
    {
        global $REX, $I18N;
        $currentArticle = OOArticle::getArticleById($REX['ARTICLE_ID']);
        $urlField = $currentArticle->getValue('seo_custom_url');
        $articleId = $currentArticle->getValue('id');
        $clangId = $currentArticle->getValue('clang');
        $msg = '';
        $isError = false;
        $urlData = seo42_utils::getUrlTypeData($urlField);
        $jsonData = json_decode($urlData, true);
        if ($REX['CUR_CLANG'] != $REX['START_CLANG_ID']) {
            $currentArticleDefaultLang = OOArticle::getArticleById($REX['ARTICLE_ID'], $REX['START_CLANG_ID']);
            $data = json_decode($currentArticleDefaultLang->getValue('seo_custom_url'), true);
            if (isset($data['url_clone']) && $data['url_clone'] == true) {
                $jsonData = $data;
            }
        }
        if (isset($jsonData['url_type'])) {
            switch ($jsonData['url_type']) {
                case SEO42_URL_TYPE_INTERN_REPLACE:
                    $customArticleId = $jsonData['article_id'];
                    $article = OOArticle::getArticleById($customArticleId);
                    if (OOArticle::isValid($article)) {
                        $msg = $I18N->msg('seo42_urltype_intern') . ' <a href="index.php?page=content&article_id=' . $customArticleId . '&mode=edit&clang=' . $REX['CUR_CLANG'] . '">' . $article->getName() . '</a>';
                    } else {
                        $msg = $I18N->msg('seo42_urltype_error');
                        $isError = true;
                    }
                    break;
                case SEO42_URL_TYPE_INTERN_REPLACE_CLANG:
                    $customArticleId = $jsonData['article_id'];
                    $customClangId = $jsonData['clang_id'];
                    $article = OOArticle::getArticleById($customArticleId, $customClangId);
                    if (OOArticle::isValid($article)) {
                        $msg = $I18N->msg('seo42_urltype_intern_plus_clang', '<a href="index.php?page=content&article_id=' . $customArticleId . '&mode=edit&clang=' . $customClangId . '">' . $article->getName() . '</a>', $REX['CLANG'][$customClangId]);
                    } else {
                        $msg = $I18N->msg('seo42_urltype_error');
                        $isError = true;
                    }
                    break;
                case SEO42_URL_TYPE_USERDEF_INTERN:
                    // do nothing
                    break;
                case SEO42_URL_TYPE_USERDEF_EXTERN:
                    $customUrl = $jsonData['custom_url'];
                    if (seo42_utils::stringStartsWith($customUrl, 'javascript:')) {
                        $msg = $I18N->msg('seo42_urltype_userdef_javascript');
                    } else {
                        $msg = $I18N->msg('seo42_urltype_userdef') . ': <a href="' . $customUrl . '" target="_blank">' . $customUrl . '</a>';
                    }
                    break;
                case SEO42_URL_TYPE_MEDIAPOOL:
                    $customUrl = '/' . $REX['MEDIA_DIR'] . '/' . $jsonData['file'];
                    $msg = $I18N->msg('seo42_urltype_mediapool', '<a href="' . $customUrl . '" target="_blank">' . $jsonData['file'] . '</a>');
                    break;
                case SEO42_URL_TYPE_LANGSWITCH:
                    $newClangId = $jsonData['clang_id'];
                    $msg = $I18N->msg('seo42_urltype_langswitch', $REX['CLANG'][$newClangId]);
                    break;
                case SEO42_URL_TYPE_NONE:
                    $msg = $I18N->msg('seo42_urltype_none');
                    break;
                case SEO42_URL_TYPE_REMOVE_ROOT_CAT:
                    // do nothing
                    break;
                case SEO42_URL_TYPE_CALL_FUNC:
                    if (isset($jsonData['no_url']) && $jsonData['no_url']) {
                        $msg = $I18N->msg('seo42_urltype_none');
                    }
                    break;
                default:
                case SEO42_URL_TYPE_DEFAULT:
                    // do nothing
                    break;
            }
        }
        if ($msg != '') {
            echo '	<style type=text/css>
						.rex-info p,
						.rex-warning p { 
							padding: 4px 0 2px 0; 
						}
					</style>';
            if ($isError) {
                echo rex_warning($msg);
            } else {
                echo rex_info($msg);
            }
        }
    }