Вопрос по условию вывода товаров на xls

<xsl:if test="position() mod 3 = 0">
                     <xsl:text disable-output-escaping="yes">
                        &lt;/tr&gt;
                        &lt;tr&gt;
                     </xsl:text>
                  </xsl:if>

<?xml version="1.0" encoding="windows-1251"?>
<!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="Windows-1251" indent="yes" method="html" omit-xml-declaration="no" version="1.0" media-type="text/xml"/>
   
   <xsl:decimal-format name="my" decimal-separator="," grouping-separator=" "/>
   <xsl:key name="key-group" match="item" use="property[@xml_name='item_main_group']/value" />
   
   <xsl:template match="/">
      <xsl:apply-templates select="/shop"/>
   </xsl:template>
   
   
   <!-- МагазинКаталогТоваровГлавная -->
   <xsl:template match="shop">
      
      <xsl:variable name="unique_group" select="//item[generate-id(.)=generate-id(key('key-group',property[@xml_name='item_main_group']/value))]/property[@xml_name='item_main_group']/value" />
      
      <xsl:for-each select="$unique_group">
         <h2 style="text-align:center"><xsl:value-of select="." /></h2>
         <table class="mainpage"> <tr>
               <xsl:for-each select="key('key-group', .)">
                  
                  <td valign="top">
                     <!-- Принадлежность товара -->
                  <h3><a href="{/shop/path}{fullpath}{path}/"><xsl:value-of select="property[@xml_name = 'item_for_what']/value"/></a></h3>
                     
                     <!-- Изображение для товара, если есть -->
                     <xsl:if test="property[@xml_name = 'item_img_index']/value != ''">
                        <a href="{/shop/path}{fullpath}{path}/">
                           <img src="{property[@xml_name = 'item_img_index']/small_image/file_path}" alt="" />
                        </a>
                     </xsl:if>
                     
                     <!-- Описание товара -->
                     <p><xsl:value-of select="property[@xml_name = 'item_mini_text']/value"/></p>
                     <p style="text-align:right">
                        цена:
                        <!-- Цена товара -->
                        <xsl:choose>
                           <xsl:when test="price != 0">
                              <span style="padding-right:10px;">
                                 <b>
                                    <xsl:variable name="price" select="price"/>
                                    <xsl:value-of select="format-number($price, '### ###,00', 'my')"/>&#xA0;
                                    <!-- Валюта товара -->
                                    <xsl:value-of disable-output-escaping="yes" select="currency"/>
                                 </b>
                              </span>
                           </xsl:when>
                           <xsl:otherwise>
                              <span style="font-size: 11pt">
                                 <b>цена&#xA0;договорная</b>
                              </span>
                           </xsl:otherwise>
                        </xsl:choose>
                     </p>
                     
                     <div class="more">
                        <p>
                           <!-- Сайт товара -->
                           <a href="{property[@xml_name='item_site']/value}" title="Перейти на сайт продукта" >сайт продукта</a><br />

                           <!-- Время использования -->
                           <span><xsl:value-of select="property[@xml_name = 'item_time_up']/value"/></span>
                        </p>

                        <!-- Корзина -->
                        <a href="{/shop/path}cart/?action=add&amp;item_id={@id}" onclick="return AddIntoCart('{/shop/path}', {@id}, document.getElementById('count_{@id}').value)" class="add">
                           <img alt="В корзину" title="В корзину" src="/i/add.png"/>
                        </a>
                     </div>
                  </td>
                  <xsl:if test="position() mod 3 = 0">
       <xsl:text disable-output-escaping="yes">
                        &lt;/tr&gt;
                        &lt;/table&gt;
                        &lt;table class="mainpage"&gt;
                        &lt;tr&gt;

                     </xsl:text>
                  </xsl:if>
               </xsl:for-each>

            </tr>
         </table>
         
      </xsl:for-each>
   </xsl:template>
</xsl:stylesheet>