if(document.getElementById('relative'))document.getElementById('relative').innerHTML='<div>前一篇：<a href=\"/other/chem_knowledge/show.asp?id=300934\" target=\"_self\">白油概述</a></div>\n<div>后一篇：<a href=\"/other/chem_knowledge/show.asp?id=320809\" target=\"_self\">上海市质量技术监督局发布车用柴油标准（沪四标准）</a></div>\n';