[xsl] How to test for a determined value of a node-set

Subject: [xsl] How to test for a determined value of a node-set
From: "Jaime A Stuardo Bahamondes" <jstuardo@xxxxxxxxxxx>
Date: Wed, 17 Dec 2003 15:43:55 -0400
Hi all...

I have for example:

<xml_1>
  <field1>1234</field1>
  <field2>0</field2>
  <field3>567</field3>
</xml_1>

or

<xml_2>
  <field1>1234</field1>
  <field2>983</field2>
  <field3>567</field3>
</xml_2>

I programmed an XSL that displays values of a XML with that structure. At the bottom af the page, I need to write a text if some value of field is 0. If none is 0, no text is displayed. For example, with xml_1, the text is displayed, with xml_2, the text isn't displayed.

What xslt instruction do I need to use? 
Thanks

Jaime

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