document.write("<div class='udPage'><img src='/image/title.gif' width='8' height='9' />&nbsp;&nbsp;<b>上一篇：</b><a href='/productdetail.asp?product_id=180' class='blue'>MODBUSTCPTCP/IP以太网编码器</a></div><div class='udPage'><img src='/image/title.gif' width='8' height='9' />&nbsp;&nbsp;<b>下一篇：</b><a href='/productdetail.asp?product_id=166' class='blue'>BISS-C单圈</a></div>")