var datevar centryif(today.getDay()==0) day = "星期日"if(today.getDay()==1) day = "星期一"if(today.getDay()==2) day = "星期二"if(today.getDay()==3) day = "星期三"if(today.getDay()==4) day = "星期四"if(today.getDay()==5) day = "星期五"if(today.getDay()==6) day = "星期六"centry="";if (today.getYear()<2000 ) centry = "19" ;date1 = centry + (today.getYear()) + "年" + (today.getMonth() + 1 ) + "月" + today.getDate() + "日" ;date2 = "" + day ;document.write( date1+date2);//--></script>              </font></div>          </td>        </tr>      </table>      <table width="100%" border="0" cellspacing="0" cellpadding="0" height="10">        <tr>           <td bgcolor="#3366FF"><img src="../../image/BLANK.gif" width="1" height="1"><img src="../../image/BLANK.gif" width="100%" height="8"></td>        </tr>      </table></td>  </tr></table><table width="100%" border="0" cellspacing="2" cellpadding="0">  <tr>     <td width="30%" valign="top">       <table width="100%" border="1" cellspacing="0" cellpadding="0" bgcolor="#99CCFF" bordercolor="#3399FF">        <tr valign="bottom">           <td height="25">             <div align="center"><b><font size="3">目　　錄</font></b></div>          </td>        </tr>        <tr valign="bottom">           <td height="20" valign="bottom"> <font size="2"> 　<a href="002.htm">混合信號PCB的分區設計(一)</a></font></td>        </tr>        <tr valign="bottom">           <td height="20" valign="bottom"> <font size="2">　<a href="003.htm">混合信號PCB的分區設計(二)</a></font></td>        </tr>        <tr valign="bottom">           <td height="20" valign="bottom"> <font size="2">　<a href="001.htm">PCB設計經驗點滴</a></font></td>        </tr>        <tr valign="bottom">           <td height="20" valign="bottom"> <font size="2">　<a href="004.htm">印制電路板的可靠性設計—地線設計</a></font></td>        </tr>        <tr valign="bottom">           <td height="20" valign="bottom"> <font size="2">　<a href="005.htm">印制電路板的可靠性設計-去耦電容配置</a></font></td>        </tr>        <tr valign="bottom">           <td height="20" valign="bottom"> <font size="2">　<a href="006.htm">印制電路板設計原則和搞干擾措施</a></font></td>        </tr>        <tr valign="bottom">           <td height="21" valign="bottom"> <font size="2">　<a href="007.htm">PCB業余制作基本方法和工藝流程</a></font></td>        </tr>        <tr valign="bottom">           <td height="20" valign="bottom"> <font size="2">　<a href="008.htm">PCB新技術</a></font></td>        </tr>        <tr valign="bottom">           <td height="20" valign="bottom"> <font size="2">　<a href="009.htm">印制線路板問題</a></font></td>        </tr>        <tr valign="bottom">           <td height="20" valign="bottom"> <font size="2">　<a href="010.htm">高頻電路布線技巧</a></font></td>        </tr>        <tr valign="bottom">           <td height="20" valign="bottom"><font size="2">　<a href="011.htm">電子產品設計中的考慮種種</a></font></td>        </tr>        <tr valign="bottom">           <td height="20" valign="bottom"><font size="2">　<a href="012.htm">高質量PCB設計</a></font></td>        </tr>        <tr valign="bottom">           <td height="20" valign="bottom"><font size="2">　<a href="013.htm">電路板布局、布線和安裝的抗ESD設計規則</a></font></td>        </tr>        <tr valign="bottom">           <td height="20" valign="bottom"><font size="2"> 　<a href="014.htm">嵌入式開關電源的PCB設計</a></font></td>        </tr>        <tr valign="bottom">           <td height="20" valign="bottom"><font size="2">　<a href="015.htm">確保信號完整性的電路板設計準則</a></font></td>        </tr>        <tr valign="bottom">           <td height="20" valign="bottom"><font size="2">　<a href="016.htm">印刷布線圖的基本設計方法和原則要求</a></font></td>        </tr>        <tr valign="bottom">           <td height="20" valign="bottom"><font size="2">　<a href="017.htm">值得注意的單片機控制板的設計原則</a></font></td>        </tr>        <tr valign="bottom">           <td height="20" valign="bottom"><font size="2">　<a href="018_1.htm">高速PCB設計指南之一</a></font></td>        </tr>        <tr valign="bottom">           <td height="20" valign="bottom"><font size="2">　<a href="018_2.htm">高速PCB設計指南之二</a></font></td>        </tr>        <tr valign="bottom">           <td height="20" valign="bottom"><font size="2">　<a href="018_3.htm">高速PCB設計指南之三</a></font></td>        </tr>        <tr valign="bottom">           <td height="20" valign="bottom"><font size="2">　<a href="018_4.htm">高速PCB設計指南之四</a></font></td>        </tr>        <tr valign="bottom">           <td height="20" valign="bottom"><font size="2">　<a href="018_5.htm">高速PCB設計指南之五</a></font></td>