Воспрос про левое меню

<?if (!defined("B_PROLOG_INCLUDED") || B_PROLOG_INCLUDED!==true)die();?>
<?
//echo '<pre>'; print_r($arResult); echo '</pre>';
if (count($arResult) < 1)
   return;

$bManyIblock = array_key_exists("IBLOCK_ROOT_ITEM", $arResult[0]["PARAMS"]);
?>

   <ul id="left-menu">
<?
   $previousLevel = 0;
   foreach($arResult as $key => $arItem):

      if ($previousLevel && $arItem["DEPTH_LEVEL"] < $previousLevel):
         echo str_repeat("</ul></li>", ($previousLevel - $arItem["DEPTH_LEVEL"]));
      endif;

      if ($arItem["IS_PARENT"]):
         $i = $key;
         $bHasSelected = $arItem['SELECTED'];
         $childSelected = false;
         if (!$bHasSelected)
         {
            while ($arResult[++$i]['DEPTH_LEVEL'] > $arItem['DEPTH_LEVEL'])
            {
               if ($arResult[$i]['SELECTED'])
               {
                  $bHasSelected = $childSelected = true; break;
               }
            }
         }
         
         $className = $nHasSelected ? 'selected' : '';//($bHasSelected ? 'selected' : '');
?>
      <? if ($arItem['DEPTH_LEVEL'] > 1 && !$childSelected && $bHasSelected) :?>
         <li class="current">
         <a class="selected" href="<?=$arItem["LINK"]?>"><?=$arItem["TEXT"]?></a>
         <ul>

      <? else:?>
         <li<?=$bHasSelected ? ' class="selected"' : ''?>>
         <a<?=$bHasSelected ? ' class="selected"' : ''?> href="<?=$arItem["LINK"]?>"><?=$arItem["TEXT"]?></a>
         <ul<?=$bHasSelected || ($bManyIblock && $arItem['DEPTH_LEVEL'] <= 1) ? '' : ' style="display: none;"'?>>
      <? endif?>


<?
      else:
         if ($arItem["PERMISSION"] > "D"):
            $className = $arItem['SELECTED'] ? $arItem['DEPTH_LEVEL'] > 1 ? 'current' : "selected" : '';
?>
      <li<?=$className ? ' class="'.$className.'"' : ''?>>

         <a<?if ($arItem['SELECTED']):?> class="selected"<?endif?> href="<?=$arItem["LINK"]?>"><?=$arItem["TEXT"]?></a>

      </li>
<?
         endif;
      endif;

      $previousLevel = $arItem["DEPTH_LEVEL"];
   endforeach;

   if ($previousLevel > 1)://close last item tags
      echo str_repeat("</ul></li>", ($previousLevel-1) );
   endif;
?>
   </ul>