Случайное фото, виджет для коробки

<?php
// $IBLOCK_ID - ID инфоблока галереи
$IBLOCK_ID = 15;

$arSelect = Array("IBLOCK_ID", "ID", "NAME", "PREVIEW_PICTURE", "DETAIL_PAGE_URL");

$res = CIBlockElement::GetList(Array("RAND" => "ASC"), Array("IBLOCK_ID" => $IBLOCK_ID), false, Array("nTopCount"=>1), $arSelect);
$ob = $res->GetNextElement();

   $arFields = $ob->GetFields();
   $PREVIEW_PICTURE = CFile::GetPath($arFields["PREVIEW_PICTURE"]);

$arFields["PICTURE"] = CFile::GetFileArray($arFields["PREVIEW_PICTURE"]);
?>
<div class="photo-random"><center>
   <?if(is_array($arFields["PICTURE"])):?>
      <a href="<?=$arFields["DETAIL_PAGE_URL"]?>"><img
            border="0"
            src="<?=$arFields["PICTURE"]["SRC"]?>"
            width="<?=$arFields["PICTURE"]["WIDTH"]?>"
            height="<?=$arFields["PICTURE"]["HEIGHT"]?>"
            alt="<?=$arFields["PICTURE"]["ALT"]?>"
            title="<?=$arFields["PICTURE"]["TITLE"]?>"
            /></a><br />
   <?endif?>
   <a href="<?=$arFields["DETAIL_PAGE_URL"]?>">Увеличить фото</a>
</center></div>