if(document.getElementById('relative'))document.getElementById('relative').innerHTML='<div>前一篇：<a href=\"/other/chem_knowledge/show.asp?id=599036\" target=\"_self\">什么是石油美元</a></div>\n<div>后一篇：<a href=\"/other/chem_knowledge/show.asp?id=601884\" target=\"_self\">怎样进行柴油的净化并使用</a></div>\n';