Re: Calculating cumulative values and min/max

a) in the predicate [@x = current()/@x], why is current node used and not
the context node used?  I guess I'm confused at to which @x is which in the
predicate.

current() returns the current node from outside of the the XPath, so
if you have:

then you are comparing @x on the parent node (the first @x in the
predicate), and @x on the node thats currently being matched (the
second @x).

<xsl:variable name="this" select="."/>
<xsl:value-of select="parent::*[@x = $this/@x"/>

b) is it possible to calculate min/max values is this only possible in
XSLT/XPATH 2.0?

cheers
andrew