<?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:ps="urn:percipientstudios-com:xslt"
    exclude-result-prefixes="msxml umbraco.library ps">
<xsl:output method="xml" omit-xml-declaration="yes" />

<!-- 
======================================================================
NavigationHierarchy.xslt
======================================================================
Copyright 2008 Percipient Studios. All rights reserved.
www.percipientstudios.com
======================================================================
-->

<!-- ============================================================ -->
<xsl:param name="currentPage"/>

<xsl:variable name="startingLevel">
    <!-- what level in the content tree is the "top" of the navigation list generated? -->
    <xsl:choose>
        <xsl:when test="string(/macro/startingLevel) != ''">
            <xsl:value-of select="/macro/startingLevel"/>
        </xsl:when>
        <xsl:otherwise>2</xsl:otherwise>
    </xsl:choose>
</xsl:variable>

<xsl:variable name="stoppingLevel">
    <!-- what level in the content tree is the lowest you want to display? -->
    <xsl:choose>
        <xsl:when test="string(/macro/stoppingLevel) != ''">
            <xsl:value-of select="/macro/stoppingLevel"/>
        </xsl:when>
        <xsl:otherwise>4</xsl:otherwise>
    </xsl:choose>
</xsl:variable>

<xsl:variable name="showHome">
    <!-- show a "Home" link for the top-level node? -->
    <xsl:choose>
        <xsl:when test="string(/macro/showHome) != ''">
            <xsl:value-of select="/macro/showHome"/>
        </xsl:when>
        <xsl:otherwise>0</xsl:otherwise>
    </xsl:choose>
</xsl:variable>

<!-- ============================================================ -->

<xsl:template match="/">
<div id="sidebar">
<span class="menuhead">
<xsl:value-of select="$currentPage/ancestor-or-self::node[@level = '2']/@nodeName"/>
</span>

<div id="leftmenu">
    <xsl:if test="$showHome = 1">
        <ul class="Home">
            <li>
                <xsl:if test="$currentPage/ancestor-or-self::node [@level=$startingLevel]/@id = $currentPage/@id">
                    <xsl:attribute name="class">Current</xsl:attribute>
                </xsl:if>
                <a href="/">Home</a>
            </li>
        </ul>
    </xsl:if>

    <xsl:call-template name="drawNodes">
        <xsl:with-param name="parent" select="$currentPage/ancestor-or-self::node/descendant-or-self::node [@level=$startingLevel]" />
    </xsl:call-template>
</div>
</div>
</xsl:template>

<!-- ============================================================ -->

<xsl:template name="drawNodes">
    <xsl:param name="parent" />
    <xsl:if test="umbraco.library:IsProtected($parent/@id, $parent/@path) = 0 
        or (umbraco.library:IsProtected($parent/@id, $parent/@path) = 1 
        and umbraco.library:HasAccess($parent/@id, $parent/@path) = 1)">

        <ul>
            <xsl:attribute name="class">
                <xsl:text>Level</xsl:text><xsl:value-of select="$parent/node/@level"/>
            </xsl:attribute>
            <xsl:for-each select="$parent/node [string(./data [@alias='umbracoNaviHide']) != '1' 
                        and @level &lt;= $stoppingLevel]">
                <li>
                    <!--<xsl:if test="ps:isInList($currentPage/@path, current()/@id, ',') = 1">-->
        <xsl:if test="$currentPage/ancestor-or-self::node/@id = current()/@id">
                        <xsl:attribute name="class">Current</xsl:attribute>
                    </xsl:if>

                    <xsl:if test="string(data [@alias='umbracoRedirect']) != ''">
                        <a class="ExternalLink" href="{data [@alias='umbracoRedirect']}">
                            <xsl:value-of select="@nodeName" />
                        </a>
                    </xsl:if>
                    <xsl:if test="string(data [@alias='umbracoRedirect']) = ''">
        
                        <a href="{umbraco.library:NiceUrl(@id)}">
                            <xsl:value-of select="@nodeName" />
                        </a>
                    </xsl:if>

                    <xsl:if test="count(./node [string(./data [
                        @alias='umbracoNaviHide']) != '1' 
                        and @level &lt;= $stoppingLevel
                        and ps:isInList($currentPage/@path, current()/@id, ',') = 1
                        ]) &gt; 0">
                        <xsl:call-template name="drawNodes">
                            <xsl:with-param name="parent" select="." />
                        </xsl:call-template>
                    </xsl:if>
                </li>
            </xsl:for-each>
        </ul>
    </xsl:if>
</xsl:template>
<!-- ============================================================ -->

<msxml:script language="C#" implements-prefix="ps">
<![CDATA[
public bool isInList(string sList, string sFind, string sDelim) {
    foreach (string sItem in sList.Split(sDelim.ToCharArray()[0]))
        if (sItem == sFind)
            return true;

    return false;
}
]]>
</msxml:script>

<!-- ============================================================ -->

</xsl:stylesheet>

save xlst file >>> Error occured

System.OverflowException: Value was either too large or too small for an Int32.
at System.Convert.ToInt32(Double value)
at System.Double.System.IConvertible.ToInt32(IFormatProvider provider)
at System.Convert.ChangeType(Object value, Type conversionType, IFormatProvider provider)
at System.Xml.Xsl.Runtime.XmlQueryRuntime.ChangeTypeXsltArgument(XmlQueryType xmlType, Object value, Type destinationType)
at System.Xml.Xsl.Runtime.XmlQueryContext.InvokeXsltLateBoundFunction(String name, String namespaceUri, IList`1[] args)
at (XmlQueryRuntime {urn:schemas-microsoft-com:xslt-debug}runtime, IList`1 parent)
at (XmlQueryRuntime {urn:schemas-microsoft-com:xslt-debug}runtime)
at Root(XmlQueryRuntime {urn:schemas-microsoft-com:xslt-debug}runtime)
at Execute(XmlQueryRuntime {urn:schemas-microsoft-com:xslt-debug}runtime)
at System.Xml.Xsl.XmlILCommand.Execute(Object defaultDocument, XmlResolver dataSources, XsltArgumentList argumentList, XmlSequenceWriter results)
at System.Xml.Xsl.XmlILCommand.Execute(Object defaultDocument, XmlResolver dataSources, XsltArgumentList argumentList, XmlWriter writer, Boolean closeWriter)
at System.Xml.Xsl.XmlILCommand.Execute(IXPathNavigable contextDocument, XmlResolver dataSources, XsltArgumentList argumentList, XmlWriter results)
at System.Xml.Xsl.XmlILCommand.Execute(IXPathNavigable contextDocument, XmlResolver dataSources, XsltArgumentList argumentList, TextWriter results)
at System.Xml.Xsl.XslCompiledTransform.Transform(IXPathNavigable input, XsltArgumentList arguments, TextWriter results)
at umbraco.presentation.webservices.codeEditorSave.SaveXslt(String fileName, String oldName, String fileContents, Boolean ignoreDebugging)

Answer here

http://our.umbraco.org/forum/developers/xslt/3102-Using-niceurl--Value-was-either-too-large-or-too-small-for-an-Int32-

Rich

is working on a reply...