if(document.getElementById('relative'))document.getElementById('relative').innerHTML='<div>前一篇：<a href=\"/other/chem_knowledge/show.asp?id=322639\" target=\"_self\">汽油</a></div>\n<div>后一篇：<a href=\"/other/chem_knowledge/show.asp?id=324899\" target=\"_self\">\'清洁能源\'不等于\'新能源\'</a></div>\n';