if(document.getElementById('relative'))document.getElementById('relative').innerHTML='<div>前一篇：<a href=\"/other/chem_knowledge/show.asp?id=193996\" target=\"_self\">外贸常用英语汇编</a></div>\n<div>后一篇：<a href=\"/other/chem_knowledge/show.asp?id=194001\" target=\"_self\">信用证的种类</a></div>\n';