<!DOCTYPE html>
<html>
  <head>
    <style>
      body {
          font-size: 13px;
          font-family: sans-serif;
      }
      table {
          padding: 2px 3px 3px 2px;
      }
      input {
          padding: 6px 6px 5px 5px;
      }
    </style>
  </head>
  <body>
    <fieldset>
      <table>
        <tr>
          <td>
            <input type="text" value=""/>
          </td>
        </tr>
      </table>
    </fieldset>
    <script>
        var el = document.getElementsByTagName('input')[0];
        el.focus();
    </script>
  </body>
</html>