grouping after filtering (follow on question: about me

in the previous example
...
<book>
<author>author1</author>
<name>x box</name>
<type>sc-fi</type>
</book>
<book>
<author>author2</author>
<name>elf story</name>
<type>adventure</type>
</book>
<book>
<author>author1</author>
<name>the return of Dr who</name>
<type>sc-fi</type>
</book>
<book>
<author>author2</author>
<name>something2</name>
<type>sc-fi</type>
</book>
...

<xsl:template match="book">
<xsl:if test="author='author2'">
<xsl:call-template select="test"/>
</xsl:if>
</xsl:template>

<xsl:template name="test"/>
<!--start grouping the data-->

Regards
Kit

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