I have the following pages in my content try and I and attempting to present the parent as well as the child nodes in the navigation bar.

Content
MySiteHomePage (Home)
InformationPage
Subpages 1
Other subpages A
Misc subpages 1
Misc subpages 2
Other subpages B
Misc subpages 3
Misc subpages 4
Subpages 2
Other subpages A
Misc subpages 5
Misc subpages 6 
Other subpages B
Misc subpages 7
Misc subpages 8

About Us
Contact Us
FAQs
...

(1) When a click on the link -InformationPage- I will like to present the following menu

Home | InformationPage  (Selected) | Subpages 1 | Subpages 2

(2) When a click on the link  -Other subpages A- I will like to present the following menu

Home | InformationPage | Subpages 1 |  Other subpages A  (Selected)

(3) When a click on the link  - Misc subpages 1 -  I will like to present the following menu

Home | InformationPage | Subpages 1 | Other subpages A (Selected)

I am encountering issues with the url of the ancestor (Subpages 1) referencing a child node (Other subpages A).

The code snippet has been presented below:

<?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"

  exclude-result-prefixes="msxml umbraco.library">

    <xsl:output method="xml" omit-xml-declaration="yes" />

    <xsl:param name="currentPage"/>

    <!-- Input the documenttype you want here -->

    <xsl:variable name="level" select="[aLevelValue]"/>

    <xsl:template match="/">

    <ul id="middleNavigation">

      <li>

        <a href="/"><xsl:value-of select="umbraco.library:GetDictionaryItem('Home')"/></a>

      </li>

      <li>

        <a href="{umbraco.library:GetDictionaryItem(InformationPageUrl)}">

         <xsl:value-of select="umbraco.library:GetDictionaryItem('InformationPage')"/>

        </a>

      </li>

      <xsl:for-each select="$currentPage/* [@level=$level]/* [@isDoc and string(umbracoNaviHide) != '1']">

        <li>

          <xsl:if test="@id = $currentPage/@id">

              <xsl:attribute name="class">current</xsl:attribute>

          </xsl:if>

          <a class="navigation" href="{umbraco.library:NiceUrl(@id)}">

            <span><xsl:value-of select="@nodeName"/></span>

          </a>

        </li>

      </xsl:for-each>

    </ul>

</xsl:template>

</xsl:stylesheet>