if(document.getElementById('relative'))document.getElementById('relative').innerHTML='<div>前一篇：<a href=\"/other/chem_knowledge/show.asp?id=281366\" target=\"_self\">甲苯国家标准GB 3406-90</a></div>\n<div>后一篇：<a href=\"/other/chem_knowledge/show.asp?id=282750\" target=\"_self\">白油简介及生产方法</a></div>\n';