?filter[new]=1
?filter%5Bnew%5D=1
udata://catalog/getSmartCatalog//238///99/?filter[best_offers]=1
<xsl:apply-templates select="document('udata://catalog/getSmartCatalog/notemplate/238///99/?filter[new]=1')/udata/lines/item" mode="new"/>
<xsl:template match="item" mode="new">
....
</xsl:template>