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=129' class='blue'>测速编码器-RS485信号-（60mm系列）</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=127' class='blue'>测速编码器-RS485信号38mm外径）</a></div>")