document.writeln("<Center><div class=\"doc\"><a href=\'/e/member/fava/add/?classid=50&id=4669\'  target=\'_self\'><i class=\"fa fa-file-word-o\"></i> 浅析榆树岭煤矿瓦斯抽放系统布置及选型文档下载.doc </a></div></Center>");