Сворачивающийся каталог

      <xsl:if test="group">
            <xsl:variable name="ul_style">
               <xsl:choose>
                  <xsl:when test="$current_group_id = @id">display: block</xsl:when>
                  <xsl:otherwise>display: none</xsl:otherwise>
               </xsl:choose>
            </xsl:variable>
            
            <ul class="left_menu gray_link gray" id="{@id}" style="{$ul_style}">
               <xsl:apply-templates select="group"/>
            </ul>

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE xsl:stylesheet>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
   <xsl:output xmlns="http://www.w3.org/TR/xhtml1/strict" doctype-public="-//W3C//DTD XHTML 1.0 Strict//EN" encoding="utf-8" indent="yes" method="html" omit-xml-declaration="no" version="1.0" media-type="text/xml"/>
   <xsl:template match="/">
      <xsl:apply-templates select="shop"/>
   </xsl:template>
   <!-- Шаблон для магазина -->
   <xsl:template match="/shop">
      
      <SCRIPT>
         <xsl:comment>
            <xsl:text disable-output-escaping="yes">
               <![CDATA[
               function show_hide_menu(id)
               {
               if (obj = document.getElementById(id))
               {
               obj.style.display == 'none' ? obj.style.display = 'block' : obj.style.display = 'none';
               return false;
               }
               return true;
               }
               ]]>
            </xsl:text>
         </xsl:comment>
      </SCRIPT>
   <h2><a href="{path}" title="Интернет-магазин">Интернет-магазин</a></h2>
      <xsl:variable name="parent_group_id" select="@current_group_id"/>
      <!-- Выводим группы магазина -->
      <ul class="left_menu" id="shop_menu">
         <xsl:apply-templates select="//group[@parent=0]"/>
      </ul>
   </xsl:template>
   <!-- Шаблон для групп товара -->
   <xsl:template match="group">
      <xsl:variable name="current_group_id" select="/shop/ТекущаяГруппа"/>
      <li>
         <!-- Если это подпункт (родитель не равен 0) - выводим слева от него тире -->
         <xsl:if test="@parent != 0">
            &#8212;
         </xsl:if>
         
         <!-- Определяем стиль вывода ссылки -->
         <xsl:variable name="link_style">
            <xsl:choose>
               <!-- Выделяем текущую страницу жирным (если это текущая страница) -->
               <xsl:when test="$current_group_id = @id">font-weight: bold;color: #009BE8</xsl:when>
               <!-- Иначе обычный вывод с пустым стилем -->
               <xsl:otherwise></xsl:otherwise>
            </xsl:choose>
         </xsl:variable>
         
         <a href="{/shop/path}{fullpath}" style="{$link_style}" onClick="return show_hide_menu('{@id}');">
            <xsl:value-of disable-output-escaping="yes" select="name"/></a>
         <xsl:if test="group">
            <xsl:variable name="ul_style">
               <xsl:choose>
                  <xsl:when test="$current_group_id = @id">display: block</xsl:when>
                  <xsl:otherwise>display: none</xsl:otherwise>
               </xsl:choose>
            </xsl:variable>
            
            <ul class="left_menu gray_link gray" id="{@id}" style="{$ul_style}">
               <xsl:apply-templates select="group"/>
            </ul>
         </xsl:if>
         
      </li>
   </xsl:template>
</xsl:stylesheet>

<xsl:when test="$current_group_id = @id">display: block</xsl:when>