如何取得表格中的align属性值？在线，急！

Question

<table border="1" width="100%" id="g" height="33">
  <tr>
    <td width="25%" height="1">
      <p align="left">edwsd</td>
    <td width="25%" height="1">
      <p align="right">gh
    </td>
    <td width="25%" height="1">
      <p align="right">hgfh</p>
    </td>
    <td width="25%" height="1">
      <p align="center">fhf
    </td>
  </tr>
</table>
<div id=show></div>
<script language=JavaScript>
function window.onload()
  {var t=g.childNodes[0].childNodes[0].childNodes[0];
   var s="第1个单元格对其属性为："+t.childNodes[0].align+"<br>";
   var i=2;
   while(t=t.nextSibling)
     s+="第"+(i++)+"个单元格对其属性为："+t.childNodes[0].align+"<br>";
   show.innerHTML=s;
  }
</script>

Answer 1

<table border="1" width="100%" id="g" onclick="aa()" height="33">
  <tr>
    <td width="25%" height="1" id="star" align="center">
      <p align="left">edwsd</td>
    <td width="25%" height="1">
      <p align="right">gh
    </td>
    <td width="25%" height="1">
      <p align="right">hgfh</p>
    </td>
    <td width="25%" height="1">
      <p align="center">fhf
    </td>
  </tr>
</table>
<script language="JavaScript" type="text/JavaScript">
alert(document.all.star.align);
</script>