Beginner question with templates

Hi,
I started using XSL and run into my first problem.

I have a XML file like this:

<SECTION>
	<DATA>...</DATA>
	<DATA>...</DATA>
	<SUMMARY>..<SUMMARY>
</SECTION
<SECTION>
	<DATA>...</DATA>
	<DATA>...</DATA>
</SECTION

If there's no summary I want to output all <DATA> elements of a <SECTIONS>
but if the summary is present I only want to output the <SUMMARY>:

<SECTION>
	<SUMMARY>..<SUMMARY>
</SECTION
<SECTION>
	<DATA>...</DATA>
	<DATA>...</DATA>
</SECTION

Any help appreciated
Martin Rothschink

AxoNet Software GmbH
Osianderstr. 2/1, 73230 Kirchheim unter Teck, Germany
Tel +49 (7021) 735 600, Fax +49 (7021) 735 601
mailto:Martin.Rothschink@xxxxxxxxx, Web http://www.axonet.de



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