umbraco 4.11.5

here is my Xslt where I make a check on "$currentPage/testBackgroundBillede/widgets/widget/umbracofile" is empty. 

if it is not empty then it displays the images. 

but if it is empty. 

I would like to check on the parent if it has images and if it has then it displays the images

from umbraco.config

empty

        <testBackgroundBillede>
          <widgets>
            <widget isCollapsed="false">
              <umbracofile />
              <billedetekst />
            </widget>
          </widgets>
        </testBackgroundBillede>

the two images in

    <testBackgroundBillede>
      <widgets>
        <widget isCollapsed="false">
          <umbracofile>1096</umbracofile>
          <billedetekst>test</billedetekst>
        </widget>
      </widgets>
        <widget isCollapsed="false">
          <umbracofile>1096</umbracofile>
          <billedetekst>test</billedetekst>
        </widget>
      </widgets>
    </testBackgroundBillede>

Xslt

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE xsl:stylesheet [ <!ENTITY nbsp "&#x00A0;"> ]>
<xsl:stylesheet
version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:msxml="urn:schemas-microsoft-com:xslt"
xmlns:umbraco.library="urn:umbraco.library" xmlns:Exslt.ExsltCommon="urn:Exslt.ExsltCommon" xmlns:Exslt.ExsltDatesAndTimes="urn:Exslt.ExsltDatesAndTimes" xmlns:Exslt.ExsltMath="urn:Exslt.ExsltMath" xmlns:Exslt.ExsltRegularExpressions="urn:Exslt.ExsltRegularExpressions" xmlns:Exslt.ExsltStrings="urn:Exslt.ExsltStrings" xmlns:Exslt.ExsltSets="urn:Exslt.ExsltSets"
exclude-result-prefixes="msxml umbraco.library Exslt.ExsltCommon Exslt.ExsltDatesAndTimes Exslt.ExsltMath Exslt.ExsltRegularExpressions Exslt.ExsltStrings Exslt.ExsltSets ">
 
<xsl:output method="xml" omit-xml-declaration="yes"/>
 
<xsl:param name="currentPage"/>
 
<xsl:template match="/">
 
<xsl:variable name="Billede" select="$currentPage/testBackgroundBillede/widgets/widget/umbracofile"/>
 
<xsl:choose>
<xsl:when test="$Billede !=''">
 
<xsl:for-each select="$currentPage/testBackgroundBillede/widgets/widget">
 
<xsl:variable name="backgroundbillede" select="umbraco.library:GetMedia(.//umbracofile, false)"/>
 
<xsl:variable name="backgroundbilledetext" select=".//billedetekst"/>
 
<img src="{$backgroundbillede/umbracoFile}" alt="{$backgroundbilledetext}" class="bgM"/>
 
</xsl:for-each>
 
</xsl:when>
 
<xsl:otherwise>
 /* How do I check whether parent have some images */
</xsl:otherwise>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>