View file design/themes/web/default/views/layouts/sidebar.php

<td style="vertical-align: top;">
<div class="cabinet">
<?=System::ads('header'); ?>
<div class="panel"><?=Lang::get('menu') ?></div>
<?=$this->widgets('menu'); ?>
</div>
<?=System::ads('footer'); ?>	
</td>
<td style="vertical-align: top;">
<div class="content">