if(document.getElementById('relative'))document.getElementById('relative').innerHTML='<div>前一篇：<a href=\"/other/chem_knowledge/show.asp?id=593253\" target=\"_self\">使用汽油的6点提示</a></div>\n<div>后一篇：<a href=\"/other/chem_knowledge/show.asp?id=593255\" target=\"_self\">如何选用汽油的标号</a></div>\n';