Get the maximum of a set of values

Hello,

I've got the following problem:

I've got an index xml file that refers to some other xml files like that:

<!-- index file -->
<index>
        <entry><xml>X1</xml>...</entry>
        <entry><xml>X2</xml>...</entry>
        <entry><xml>X3</xml>...</entry>
        ... <!-- and others -->
</index>

<!-- X1.xml -->
<entry>
        <item number="3" />
        ...
</entry>

<!-- X2.xml -->
<entry>
        <item number="7" />
        ...
</entry>

<!-- X3.xml -->
<entry>
        <item number="2" />
        ...
</entry>

The XSL file I have, belongs to the index file.

In the xsl file I can get each value of the attribute number like this:
<xsl:for-each select="index/entry">
        <xsl:variable name="vXML"><xsl:value-of select="xml" 
/>.xml</xsl:variable>
        <xsl:variable name="vNumber" 
select="document($vXML)/entry/item/@number" />
</xsl:for-each>

But my problem is, that I want to find the maximum of the attribute number / the
variable vNumber!
This value should become a global variable.

Does anyone has an idea?!

Thanks

BirgitZ



-------------------------------------------------
This mail sent through IMP: http://horde.org/imp/