Liferay 6.2 - Display a sub-tree layout type side nav bar in Liferay

<%@ include file="init.jsp" %>

<%

        long groupId = themeDisplay.getLayout().getGroupId();

List<Layout> rootLayouts = LayoutLocalServiceUtil.getLayouts(layout.getGroupId(), layout.isPrivateLayout());

String friendlyURL = themeDisplay.getLayout().getFriendlyURL();

friendlyURL = friendlyURL.substring(friendlyURL.indexOf("/") + 1);

String rootURL = friendlyURL.substring(0, friendlyURL.indexOf("/"));

%>

<ul class="unstyled">

<% 

for (Layout layout1 : rootLayouts ) { 

if ( layout1.getFriendlyURL().contains(rootURL)) {

%>       

            <li><a href="/web/<%= groupId %><%= layout1.getFriendlyURL() %>"><%= layout1.getName() %></a></li>

        <% } } %>