<tr>
    <td class="key">
        <label for="created_by_alias">
            <?php echo JText::_( 'Author Alias' ); ?>:
        </label>
    </td>
    <td>
    <?php
      $aliasBisher = $this->escape($this->article->created_by_alias);
      if (empty($aliasBisher)){
        $user     =& JFactory::getUser();
        $username = $user->get('username');
        $alias = $aliasBisher;
      }
      else {
        $alias = $aliasBisher;
      }
    ?>
        <input type="text" id="created_by_alias" name="created_by_alias" size="50" maxlength="100" value="<?=$alias?>" class="inputbox" />
    </td>
</tr>