<script>

function alignCell(){

    document.getElementById('td1').align="right";

    document.getElementById('td2').align="right";

}

</script>

<table border="1">

    <tr>

        <th>第一个名称</th>

        <th>下一个名称</th>

    </tr>

    <tr>

        <td id="td1">Peter</td>

        <td id="td2">Griffin</td>

    </tr>

</table>

<br>

<input type="button" onclick="alignCell()" value="右对齐单元格" />