test for blank

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>

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