> What about
> <xsl:template match="incoming">
>    <outgoing name="{@name}" 
> index="{count(preceding-sibling::*[not(@size)]) + 1 + 
> sum(preceding-sibling::*/@size)}"></outgoing>
>   </xsl:template>


Sure, you can do that, but it's likely to be O(n^2).

Michael Kay
http://www.saxonica.com/