 width="20" height="24"> </td>
      <td width="50" height="24">  </td>
      <td width="50" height="24"> </td>
      <td width="50" height="24"> </td>
    </tr>
    <tr bgcolor="#000000">
      <td width="50">
        <input type="button" name="quad" value="^2" onClick="form.input.value = form.input.value * form.input.value" style="COLOR: #FFFFFF; BACKGROUND-COLOR: #333333; HEIGHT: 25 px; WIDTH: 40px">
      </td>
      <td width="50">
        <input type="button" name="root" value="root" onClick="Root()" 