xsl:if syntax problem

Hi all,

As a beginner to XSL this is probably a very straighforward question.
However, help on the subject appears very limited.

I want to run a simple xsl:if statement testing an elements tag for null
value. We have so far ....

<xsl:template match="entity">
  <xsl:if test="onClick='' or not(onClick='')">
    do processing
  </xsl:if>

However, this xsl does not appear to work. The xsl will run on the following
xml code.

  <entity id="e1">
    <description>Customers</description>
    <oncontextmenu></oncontextmenu>
    <image>images/book.gif</image>
    <imageOpen>images/bookOpen.gif</imageOpen>
    <onClick>http://www.google.com</onClick>

Any help, tips, links will be much appreciated,
Brian.


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