[xsl] node lists

[Richard Lewis <richardlewis@xxxxxxxxxxxxxx>]

Hello XSLers,

Is there a way of selecting a node in a node list (as opposed to set, 
I've been reading the FAQ ;-) other than the current one?

e.g.

01:<xsl:template match="//item[@id=$selected-item]">
02:        <!-- item navigator -->
03:        <xsl:variable name="current-node-class" select="@class">
04:        <xsl:variable name="current-node" select="@id">
05:        <xsl:variable name="next-item-id">
06:                <xsl:for-each 
select="//item[@class=$current-node-class">
07:                        <xsl:sort select="@id" />
08:                        <xsl:if test="@id=$current-node and 
position()!=last()">
09:                                <xsl:value-of 
select="item[position()+1]/@id /> <!-- :-o -->
10:                        </xsl:if>
11:               </xsl:for-each>
12:        </xsl:variable>
13:        <a href="?selected-item={$next-item-id}">NEXT</a>
14:        <!-- some similar code for previous item..... -->
15:
16:        <!-- item content -->
17:       <h2><xsl:value-of select="@name" /></h2>
           ........
18:</xsl:template>

Line 09 here doesn't work because I need some expression which allows 
me to select the next item in the sorted node list generated by the 
<xsl:for-each>.

Any ideas?

Cheers,
Richard