Add your content node structure (eg a screenshot) so people actually understand what you're trying to do... I can't figure out what you want based on your textual description. (A pic says more than a 1000 words...)

Looking forward to your info.

Cheers,

/Dirk

Ok Dirk, I shall share the screenshot. 

Just get those chidlinks an extra property, like explained in the wiki. But it might be better to just create an alternative document type for external links and use that one for documents that have to redirect outside your site.

And for the internal redirect umbraco has a nifty build in mechanism: umbracoRedirect and umbracoInternalRedirectId.
 

Thanks Bert. Internal redirect worked well. To redirect to an external link, I created a document type 'EnternalRedirect' along with the template for it. Then I modified 'ExternalRedirect' template with code provided in the wiki. This is my modified template code

<%@ Master Language="C#" MasterPageFile="~/umbraco/masterpages/default.master" AutoEventWireup="true" %>
<%@ Import Namespace="umbraco.BusinessLogic" %>
<%@ Import Namespace="umbraco.cms.businesslogic.web" %>
<%@ Import Namespace="umbraco.presentation.nodeFactory" %>
<script runat="server">
  void Page_Load(object sender, System.EventArgs e)
  {
    Response.Redirect("http://www.google.com");
  }
</script>

<asp:Content ContentPlaceHolderID="ContentPlaceHolderDefault" runat="server">
 
</asp:Content>

I want google to open up in a new window or tab to replace Response.Redirect(). How can this be achieved?

Isn't it easier to just create an external link when you are parsing the navigation out? So in your navigation macro you either have the current case or you create an external link, no redirects needed ;)

<a href="nodepropertyurl" target="_blank"> nodename </a>

Sorry Bert am totally new this Umbraco. I have hardly a week experience working on this. So can you explain more on the changes in the macro. My macro looks like:

<?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:msxsl="urn:schemas-microsoft-com:xslt"  xmlns:math="http://exslt.org/math" exclude-result-prefixes="msxml umbraco.library math">

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

  <xsl:param name="currentPage"/>

  <xsl:variable name="source" select="/macro/source"/>

  <xsl:template match="/">   
    <xsl:variable name="productRanges" select="umbraco.library:GetXmlNodeById($source)/*[@isDoc and string(umbracoNaviHide) != '1']"/>
    <xsl:variable name="productRangesNodeSet" select="msxml:node-set($productRanges)"/>
   
    <div class="widget scg_widget webtreats_subnav_widget">
      <h3 class="widgettitle">By Product</h3>
      <ul>       
        <li>
          <xsl:attribute name="class">
            <xsl:text>page_item"</xsl:text>
            <xsl:if test="$currentPage/@nodeName = 'Products'">
              <xsl:text> current_page_item</xsl:text>
            </xsl:if>        
          </xsl:attribute>              
          <a href="/products.aspx" title="">Overview</a>
        </li>       
        <xsl:for-each select="$productRanges">
          <li>
            <xsl:attribute name="class">
              <xsl:text>page_item"</xsl:text>
              <xsl:if test="$currentPage/@id= ./@id">
                <xsl:text> current_page_item</xsl:text>
              </xsl:if>       
            </xsl:attribute>             
            <a href="{umbraco.library:NiceUrl(./@id)}" title=""><xsl:value-of select="./title" /></a>
          </li>           
        </xsl:for-each>
      </ul>
    </div>    
  </xsl:template>

</xsl:stylesheet>

Am not able to understand where the <a> is to be added. Please help me on this.

Guess you want something like this (default navigation prototype xslt with some additions)

<xsl:template match="/">

<!-- The fun starts here -->
<ul>
<xsl:for-each select="$currentPage/ancestor-or-self::* [@isDoc and @level=$level]/* [@isDoc and string(umbracoNaviHide) != '1']">
  <li>
    
    <xsl:if test="@nodeName != 'ExternalLinkDocType'">
    <a href="{umbraco.library:NiceUrl(@id)}">
      <xsl:if test="$currentPage/ancestor-or-self::*/@id = current()/@id">
        <!-- we're under the item - you can do your own styling here -->
        <xsl:attribute name="class">selected</xsl:attribute>
      </xsl:if>
      <xsl:value-of select="@nodeName"/>
    </a>
    </xsl:if>
    <xsl:if test="@nodeName = 'ExternalLinkDocType'">

    <a href="@urlproperty">

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

    </a>

    </xsl:if>
  </li>
</xsl:for-each>
</ul>

</xsl:template>

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