Choosing the a specific following node

Hi there,

I am trying to transform a keyword list at the moment, which is giving
me some troubles.
I have the following source doc:

<keywords>
	<keyword>
		<term>Aufbewahrung</term>
		<number>970-970c;</number>
		<term>s.</term>
		<term>also</term>
		<term>Einstweilige</term>
		<term>Verwahrung</term>
	</keyword>
	<keyword>
		<term>Auto</term>
		<number>10-13c;</number>
		<term>s.</term>
		<term>Kraftfahrzeug</term>
	</keyword>
	...
</keywords>

I'd like to get an output file like:

<keywords>
	...
	<keyword>
		<term>Aufbewahrung</term>
		<number>970-970c;</number>
		<see_also>Einstweilige Verwahrung</see_also>
	</keyword>
	<keyword>
		<term>Auto</term>
		<number>10-13c;</number>
		<see>Kraftfahrzeug</see>
	</keyword>
	...
</keywords>


I tried to achieve this via this template:

<xsl:template match="term[string(.)='s' or string(.)='s.']">
		<xsl:variable name="pos" select="position()+2"/>
		<xsl:choose>
			<xsl:when
test="following-sibling::term[string(.)='auch']">
				<siehe_auch>
					<xsl:for-each
select="following-sibling::term[position()>=$pos]">
						<xsl:value-of
select="text()"/>
						<xsl:if
test="position()!=last()">

<xsl:text>&#160;</xsl:text>
						</xsl:if>
					</xsl:for-each>
				</siehe_auch>
			</xsl:when>
			<xsl:otherwise>
				<siehe>
					<xsl:for-each
select="following-sibling::term">
						<xsl:value-of
select="text()"/>
						<xsl:if
test="position()!=last()">

<xsl:text>&#160;</xsl:text>
						</xsl:if>
					</xsl:for-each>
				</siehe>
			</xsl:otherwise>
		</xsl:choose>
	</xsl:template>

Unfortunately, I get an empty <see_also> element in my output.
I found a solution via outputting every node, which does not contain the
content "also", but this is a little bit dangerous....

Can you help me?

Wbr,
Roman


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