Make the links to the sub-projects absolute so they don't break if only site is checked out - thanks to Ted Husted for the suggestion :-)

git-svn-id: https://svn.apache.org/repos/asf/struts/site/trunk@378034 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/xdocs/navigation.xml b/xdocs/navigation.xml
index e4b6957..bd74522 100644
--- a/xdocs/navigation.xml
+++ b/xdocs/navigation.xml
@@ -56,25 +56,25 @@
         </menu>
 
         <menu name="Frameworks">
-            <item name="Action Framework" href="/struts-action/index.html"/>
-            <item name="Shale Framework" href="/struts-shale/index.html"/>
+            <item name="Action Framework" href="http://struts.apache.org/struts-action/index.html"/>
+            <item name="Shale Framework" href="http://struts.apache.org/struts-shale/index.html"/>
         </menu>
 
         <menu name="Extensions">
-            <item name="EL" href="/struts-el/index.html"/>
-            <item name="Extras" href="/struts-extras/index.html"/>
-            <item name="Flow" href="/struts-flow/index.html"/>
-            <item name="JSF Integration" href="/struts-faces/index.html"/>
-            <item name="JSP Taglib" href="/struts-taglib/index.html"/>
-            <item name="Scripting" href="/struts-scripting/index.html"/>
-            <item name="Tiles" href="/struts-tiles/index.html"/>
+            <item name="EL" href="http://struts.apache.org/struts-el/index.html"/>
+            <item name="Extras" href="http://struts.apache.org/struts-extras/index.html"/>
+            <item name="Flow" href="http://struts.apache.org/struts-flow/index.html"/>
+            <item name="JSF Integration" href="http://struts.apache.org/struts-faces/index.html"/>
+            <item name="JSP Taglib" href="http://struts.apache.org/struts-taglib/index.html"/>
+            <item name="Scripting" href="http://struts.apache.org/struts-scripting/index.html"/>
+            <item name="Tiles" href="http://struts.apache.org/struts-tiles/index.html"/>
             <item name="Other Extensions"
                   href="http://wiki.apache.org/struts/StrutsExtensions"/>
         </menu>
 
         <menu name="Subprojects">
-            <item name="Applications" href="/struts-apps/index.html"/>
-            <item name="Sandbox" href="/struts-sandbox/index.html"/>
+            <item name="Applications" href="http://struts.apache.org/struts-apps/index.html"/>
+            <item name="Sandbox" href="http://struts.apache.org/struts-sandbox/index.html"/>
         </menu>
 
         <menu name="Development">