Скрыть артикул

<td class="td_header">Артикул</td>

         <td class="td_main_2">
            <xsl:choose>
               <xsl:when test="order_items_marking != ''">
                  <xsl:value-of select="order_items_marking" />
               </xsl:when>
               <xsl:otherwise>&#8212;</xsl:otherwise>
            </xsl:choose>
         </td>