if(document.getElementById('relative'))document.getElementById('relative').innerHTML='<div>前一篇：<a href=\"/other/chem_knowledge/show.asp?id=241590\" target=\"_self\">期货交易是一种艺术</a></div>\n<div>后一篇：<a href=\"/other/chem_knowledge/show.asp?id=244984\" target=\"_self\">关税知识</a></div>\n';