Меню bitrix - изменение способа раскрытия

<?if (!defined("B_PROLOG_INCLUDED") || B_PROLOG_INCLUDED!==true)die();?>

<?if (!empty($arResult)):?>
<div class="block_header">Каталог товаров</div>
<div class="left_menu">
<?
$lastLevel = 0;
$selected = false;

foreach(array_reverse($arResult) as $arItem){
    if ($arItem["SELECTED"]>0) {
        $lastLevel = $arItem["DEPTH_LEVEL"];
        $selected = true;
    }
    if ($selected and $arItem["DEPTH_LEVEL"] < $lastLevel){
        $arResult[ $arItem["ITEM_INDEX"] ]["SELECTED"] = true;
        $lastLevel--;
    }
}
?>

<div class="menu-sitemap-tree">
<ul>
<?$previousLevel = 0;foreach($arResult as $arItem):?>
 
   <?if ($previousLevel && $arItem["DEPTH_LEVEL"] < $previousLevel):?>
      <?=str_repeat("</ul></li>", ($previousLevel - $arItem["DEPTH_LEVEL"]));?>
   <?endif?>

   <?if ($arItem["IS_PARENT"]):?>
         <li style="padding-top:5px;" <?if (!$arItem["SELECTED"]):?>class="close"<?endif?>>
            <a class="folder" href="#" onClick="OpenMenuNode(this); return false;"><?=$arItem["TEXT"]?></a>            
            <ul>

   <?else:?>

      <?if ($arItem["PERMISSION"] > "D"):?>
            <li>

               <div class="item-text"  style="<?if ($arItem["SELECTED"]):?>font-weight:bold;<?endif?>"><a style="<?=$arItem["PARAMS"]["select"]?>" href="<?=$arItem["LINK"]?>"><?=$arItem["TEXT"]?></a></div>
            </li>
      <?endif?>

   <?endif?>

   <?$previousLevel = $arItem["DEPTH_LEVEL"];?>

<?endforeach?>

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

</ul>
</div>
</div>
<?endif?>