<xsl:choose>
  <xsl:when test="string(@value)">
    the value of @value is: <xsl:value-of select="@value"/>
  </xsl:when>
  <xsl:when test="not(@value)">
    <!-- no @value found -->
  </xsl:when>
  <xsl:when test="not(string(@value))">
    There is nothing to see
  </xsl:when>
</xsl:choose>

I'm trying to test for a value of nothing for with
XSL. I understand there are no 'else' statements
available in xsl so I'm trying to get this to work. I
thought using the not function would work but so far
the only output I'm getting is from the 1st nested if
statement

Here are my if statements:

<xsl:if test="@value">
						<xsl:if test="@value[contains(., '')]">
							There is nothing to see
							</xsl:if>
						<xsl:if test="@value[not(contains(., ''))]">
							<xsl:value-of select="."/>
							</xsl:if>										
						</xsl:if>