master.xml

   <navigation>
        <page handle="startseite" id="88">
            <name>Startseite</name>
            <types>
                <type>hidden</type>
                <type>index</type>
            </types>
        </page>
        <page handle="referenzen" id="78">
            <name>Referenzen</name>
            <page handle="person" id="96">
                <name>Referenzen von Person</name>
                <types>
                    <type>hidden</type>
                </types>
            </page>
            <page handle="xml" id="94">
                <name>XML</name>
                <types>
                    <type>hidden</type>
                    <type>XML</type>
                </types>
            </page>
        </page>
        <page handle="philosophie" id="87">
            <name>Philosophie</name>
        </page>
        <page handle="loesungen" id="89">
            <name>Lösungen</name>
        </page>
        <page handle="team" id="79">
            <name>Team</name>
        </page>
        <page handle="impressum" id="93">
            <name>Impressum</name>
            <types>
                <type>hidden</type>
            </types>
        </page>
        <page handle="wartung" id="75">
            <name>Wartungsarbeiten</name>
            <types>
                <type>hidden</type>
                <type>maintenance</type>
            </types>
        </page>
        <page handle="404-page-not-found" id="76">
            <name>404: Page Not Found</name>
            <types>
                <type>404</type>
                <type>hidden</type>
            </types>
        </page>
        <page handle="feed" id="98">
            <name>Interner Feed</name>
            <types>
                <type>hidden</type>
                <type>XML</type>
            </types>
        </page>
    </navigation>

master.xsl

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0"
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:atom="http://www.w3.org/2005/Atom"
    exclude-result-prefixes="atom">

<xsl:template match="/">
	<xsl:apply-templates select="navigation/page[@id = '94']" mode="url"/>
</xsl:template>

<xsl:template match="page" mode="url">
    <xsl:value-of select="concat('root','/',@handle,'/')"/>
</xsl:template>

<xsl:template match="page/page" mode="url">
    <xsl:apply-templates select="parent::page" mode="url"/>
    <xsl:value-of select="concat(@handle,'/')"/>
</xsl:template>


</xsl:stylesheet>