if (START_PAGE=='article.php' && isset($_GET['article_id']) && isnum($_GET['article_id'])) {replace_in_output("<title>(.*?)</title>(.*?)<meta name=\'description\' content=\'(.*?)\' />(.*?)<meta name=\'keywords\' content=\'(.*?)\' />","<title>$subject</title>$2<meta name=\'description\' content=\'".substr(strip_tags($article),0,150)."\' />$4<meta name=\'keywords\' content=\'$subject\' />","si");}