[xsl] XSLT collection function to get filenames

["Arno H.P. Reuser" <a@xxxxxxxxxx>]

Friends,

If the following:

    <x:for-each select="collection('?select=*.xml')">
        <br /><x:value-of select="//h1" />
    </x:for-each>

will print the value of 'h1' tags of each document with extension .xml 
in the current directory, then how can I get it to print/capture the 
filename itself of each file?

For instance, if my directory holds the files a.xml, b.xml, c.xml,
I want the template to captur in a variable or select statement, those 
names.

Any help greatly appreciated!

Arno R.