View source for Walkthrough v2\nav bar

<table style="width:100%;">
  <tr>
    <td style="width:33%;">
      <div style="float:left;">Previous:   {{{1}}}</div>
    </td>
    <td style="width:33%;">
      <div style="text-align:center;">Up:  {{{2}}}</div>
      <div style="text-align:center;">Down:{{{3}}}</div>
    </td>
    <td style="width:33%;">
      <div style="float:right;">Next:      {{{4}}}</div>
    </td>
  </tr>
</table>