Hi Abel,

Thanks a lot for you answer, you gave lots of comments that are usefull for me.

Your solution defintely serves my needs I explained in my first mail. But as I wrote in my second mail there might be lots of attribute-combinations. So I would have to write a template for every possible combination which would make the stylesheed get very large. Maybe that's the only solution. But I would prefer a solutions with one template for all possible combinations like explained in my second mail with some default value for the variables that are not set by commandline.

<xsl:variable name="attributes" select="tokenize($query, ';')" />
<xsl:variable name="attr-names"
       select="for $i in $attributes return tokenize($i, '=')[1]" />
<xsl:variable name="attr-values"
       select="for $i in $attributes return tokenize($i, '=')[2]" />

<xsl:template match="class[
      deep-equals(@*/name(), $attr-names) and
      deep-equals(@*string(), $attr-values)]" />

  ... do your thing with the matches ...
</xsl:template>