 <td width="50" height="2">
        <input type="button" name="pi" value="PI" onClick="form.input.value += '3.1415926535897932384626433832795'" style="COLOR: #FFFFFF; BACKGROUND-COLOR: #666666; HEIGHT: 25 px; WIDTH: 40px">
      </td>
      <td width="20" height="2">  </td>
      <td width="50" height="2">
        <input type="button" name="pi2" value="+/-" onClick="Neg()" style="COLOR: #FFFFFF; BACKGROUND-COLOR: #000000; HEIGHT: 25 px; WIDTH: 40px">
      </td>
      <td width="50" height="2">
        <inp