Положить в корзину сразу несколько товаров

(function(jQuery){
   // Функции без создания коллекции
   jQuery.extend({
      addIntoCart: function(path, shop_item_id, count){
         
         var items = CheckB('group1');
         
         $.clientRequest({path: path + '?add=' + shop_item_id + '&compl=' + items + '&count=' + count, 'callBack': $.addIntoCartCallback, context: $('#little_cart')});
         return false;
      },
      addIntoCartCallback: function(data, status, jqXHR)
      {
         $.loadingScreen('hide');
         jQuery(this).html(data);
      },
      addCompare: function(path, shop_item_id, object){
         $(object).toggleClass('current');
         $.clientRequest({path: path + '?compare=' + shop_item_id, 'callBack': function(){
               $.loadingScreen('hide');
            }, context: $('#little_cart')});
         $('#compareButton').show();
         return false;
      }
   });
})(jQuery);

function CheckB(CheckBox){
var value = [];

   
CheckBox = document.getElementsByName(CheckBox);
for (var i = 0; i < CheckBox.length; i++){
if (CheckBox[i].checked){
value.push(CheckBox[i].value);

}
}
return value;
}

if (Core_Array::getRequest('add'))
{
   $shop_item_id = intval(Core_Array::getRequest('add'));
   $compl_array = Core_Array::getRequest('compl');

   if ($shop_item_id)
   {
      $oShop_Cart_Controller = Shop_Cart_Controller::instance();
      $oShop_Cart_Controller
         ->shop_item_id($shop_item_id)
         ->quantity(Core_Array::getRequest('count', 1))
         ->add();
         
      if ($compl_array)
      {
         
         $compl_array=explode(',',$compl_array);
          foreach($compl_array as $item)
          {
            $oShop_Cart_Controller
            ->shop_item_id($item)
            ->quantity(Core_Array::getRequest('count', 1))
            ->add();
          }
      }
   }

<xsl:key name="dep" match="associated/shop_item" use="shop_group_id"/>

<xsl:template match="shop_item">
<!-- ... -->
<xsl:apply-templates select="associated/shop_item" />
</xsl:template>

<xsl:template match="associated/shop_item">
      <xsl:if test="not(shop_group_id=preceding-sibling::shop_item/shop_group_id)">
         
         <ul>
            <!--  отбор по ключу
            -->
            <li><input type="radio" name="group{shop_group_id}" value="0"/>Не включать в комплектацию</li>
            <xsl:apply-templates mode="second" select="key('dep',shop_group_id)">            </xsl:apply-templates>
         </ul>
      </xsl:if>
      
      
   </xsl:template>
   
   <xsl:template match="shop_item" mode="second">
      <li>
         <!-- Название сопутствующего товара -->
         <input type="radio" name="group{shop_group_id}" value="{@id}"/><a href="{url}"><xsl:value-of disable-output-escaping="yes" select="name"/></a>,
         <!-- Цена сопутствующего товара -->
         <xsl:value-of select="price"/><xsl:text> </xsl:text><xsl:value-of disable-output-escaping="yes" select="currency"/>
      </li>
   </xsl:template>