<style type=text/css>
td {
  font-size: 12px;
  color: #000000;
  line-height: 150%;
  }
.sec1 {
  background-color: #EEEEEE;
  cursor: hand;
  color: #000000;
  border-left: 1px solid #FFFFFF;
  border-top: 1px solid #FFFFFF;
  border-right: 1px solid gray;
  border-bottom: 1px solid #FFFFFF
  }
.sec2 {
  background-color: #D4D0C8;
  cursor: hand;
  color: #000000;
  border-left: 1px solid #FFFFFF;
  border-top: 1px solid #FFFFFF;
  border-right: 1px solid gray;
  font-weight: bold;
  }
.main_tab {
  background-color: #D4D0C8;
  color: #000000;
  border-left:1px solid #FFFFFF;
  border-right: 1px solid gray;
  border-bottom: 1px solid gray;
  }
</style>
   <script language=javascript>
function secBoard(n)
{
 for(i=0;i<secTable.cells.length;i++)
  secTable.cells[i].className="sec1";
 secTable.cells[n].className="sec2";
 for(i=0;i<mainTable.tBodies.length;i++)
  mainTable.tBodies[i].style.display="none";
 mainTable.tBodies[n].style.display="block";
}
</script>
   <table border=0 cellspacing=0 cellpadding=0 width=549 id=secTable>
    <tr height=20 align=center>
     <td class=sec2 width=10% onclick="secBoard(0)">关于TBODY标记</td>
     <td class=sec1 width=10% onclick="secBoard(1)">关于cells集合</td>
     <td class=sec1 width=10% onclick="secBoard(2)">关于tBodies集合</td>
     <td class=sec1 width=10% onclick="secBoard(3)">关于display属性</td>
    </tr>
   </table>
   <table border=0 cellspacing=0 cellpadding=0 width=549 height=240 id=mainTable class=main_tab>
    <tbody style="display:block;">
    <tr>
     <td align=center valign=top> <br>
      <br>
      这里填加内容，略去。1 </td>
    </tr>
    </tbody> <tbody style="display:none;">
    <tr>
     <td align=center valign=top> <br>
      <br>
      这里填加内容，略去。2 </td>
    </tr>
    </tbody> <tbody style="display:none;">
    <tr>
     <td align=center valign=top> <br>
      <br>
      这里填加内容，略去。3 </td>
    </tr>
    </tbody> <tbody style="display:none;">
    <tr>
     <td align=center valign=top> <br>
      <br>
      这里填加内容，略去。4 </td>
    </tr>
    </tbody>
   </table>