if(document.getElementById('relative'))document.getElementById('relative').innerHTML='<div>前一篇：<a href=\"/other/chem_knowledge/show.asp?id=173085\" target=\"_self\">甲醇常识</a></div>\n<div>后一篇：<a href=\"/other/chem_knowledge/show.asp?id=173089\" target=\"_self\">甲醇的应用新技术</a></div>\n';