skeleton structure for NDK site

Change-Id: Id9f490f69231c9ab0e846d0e983969a14c67a497
diff --git a/tools/droiddoc/templates-ndk/assets/js/docs.js b/tools/droiddoc/templates-ndk/assets/js/docs.js
index 7f4be4e..192d219 100644
--- a/tools/droiddoc/templates-ndk/assets/js/docs.js
+++ b/tools/droiddoc/templates-ndk/assets/js/docs.js
@@ -219,6 +219,16 @@
       $("#nav-x li.google a").addClass("selected");
     } else if ($("body").hasClass("samples")) {
       $("#nav-x li.samples a").addClass("selected");
+    } else if (rootDir == "ndk") {
+      if ($("body").hasClass("guide")) {
+        $("#nav-x li.guide a").addClass("selected");
+      } else if ($("body").hasClass("samples")) {
+        $("#nav-x li.samples a").addClass("selected");
+      } else if ($("body").hasClass("downloads")) {
+        $("#nav-x li.downloads a").addClass("selected");
+      } else if ($("body").hasClass("reference")) {
+        $("#nav-x li.reference a").addClass("selected");
+      }
     }
 
   // highlight Distribute tab