index.html

<table>
  <tr>
    <form action='node.php'>
      <td align='right'>
        <label for='node'>Node ID:</label>
      </td>
      <td>
        <input type='text' size='10' id='node' name='id' />
      </td>
      <td>
        <input type='submit' value='Get History' />
      </td>
    </form>
  </tr>
  <tr>
    <form action='way.php'>
      <td align='right'>
        <label for='way'>Way ID:</label>
      </td>
      <td>
        <input type='text' size='10' id='way' name='id' />
      </td>
      <td>
        <input type='submit' value='Get History' />
      </td>
    </form>
  </tr>
  <tr>
    <form action='relation.php'>
      <td align='right'>
        <label for='relation'>Relation ID:</label>
      </td>
      <td>
        <input type='text' size='10' id='relation' name='id' />
      </td>
      <td>
        <input type='submit' value='Get History' />
      </td>
    </form>
  </tr>
</table>