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[xsl] next sibling - newbie question

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Hi,

My XML document structure looks like this.

<library>
    <category>
        <book name="name1"/>     
    </category>
    <category>
         <book name="name2"/>
    </category>
</library>

I have a for-each loop where based on the value of
name attribute in the book tag, I do something.
<xsl:for-each select="category"><xsl:variable
name="book"><xsl:value-of
select="book/@name"/></xsl:variable><xsl:if
test="not(contains($book,'name1'))">(<xsl:apply-templates
select="."/>)<xsl:if
test="$size>position()">|</xsl:if></xsl:if></xsl:for-each>

My GOAL, is to able to look at the next book element
and check it's name attribute value and do something.
<xsl:for-each select="item"><xsl:variable
name="book"><xsl:value-of
select="book/@name"/></xsl:variable><xsl:variable
name="nextbook"><xsl:value-of
select="book/@name/following-sibling::book[position()=1]"/></xsl:variable><xsl:if
test="not(contains($book,'internal'))">(<xsl:apply-templates
select="."/>)<xsl:if test="$size>position() and
not(contains($nextbook,'internal'))">|</xsl:if></xsl:if></xsl:for-each>

Can I do it?

Thanks


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