请教：层相对于层的定位如何实现？

Question

只要不设定层的top和left属性,层就永远位于层1的右边
<div id="daili" style="position:absolute; width:100px; height:20px; z-index:5;display:;">
  <table width="100%" border="0" cellspacing="0" cellpadding="0">
    <tr>
      <td width="33%">&nbsp;</td>
      <td width="49%">&nbsp;</td>
      <td width="18%">&nbsp;</td>
    </tr>
    <tr>
      <td>&nbsp;</td>
      <td>&nbsp;</td>
      <td><div id="Layer1" style="position:absolute; width:200px; height:115px; z-index:6">kjkhkjhkjhbkjhjk</div></td>
    </tr>
    <tr>
      <td>&nbsp;</td>
      <td>&nbsp;</td>
      <td>&nbsp;</td>
    </tr>
  </table>
</div>