diff --git a/js/libmain.js b/js/libmain.js
index ffe0e72..e0acbb4 100644
--- a/js/libmain.js
+++ b/js/libmain.js
@@ -12,7 +12,6 @@
 
     var libmain= {};
     libmain.settings= {};
-    libmain.api= {};
 
     /////////////////////////////////////// set default settings
 
@@ -46,17 +45,19 @@
         "canvas":libmain.canvas,
         "antialias":libmain.settings.use_anti_alias,
         "backgroundAlpha":0,
-        "width":100,
-        "height":100
+        "width":0,
+        "height":0
     });
 
-    libmain.stageroot=new PIXI.Container();
-    libmain.stageroot.sortableChildren=true;
-    libmain.stageroot.boundsArea=new PIXI.Rectangle(0, 0, 0, 0);
-    libmain.stageroot.cullArea=libmain.stageroot.boundsArea;
+    libmain.stage= {};
+
+    libmain.stage.root=new PIXI.Container();
+    libmain.stage.root.sortableChildren=true;
+    libmain.stage.root.boundsArea=new PIXI.Rectangle(0, 0, 0, 0);
+    libmain.stage.root.cullArea=libmain.stage.root.boundsArea;
     libmain.render_tick=function() {
         try {
-            libmain.renderer.render(libmain.stageroot);
+            libmain.renderer.render(libmain.stage.root);
         } catch(e) {
             console.error(e);
             if(typeof loadfail=="function") {
@@ -70,6 +71,15 @@
     };
     requestAnimationFrame(libmain.render_tick);
 
+    /////////////////////////////////////// add layered containers
+
+    libmain.stage.menu= {};
+
+    libmain.stage.menu.start=new PIXI.Container();
+    libmain.stage.menu.pause=new PIXI.Container();
+    libmain.stage.menu.settings=new PIXI.Container();
+    libmain.stage.hud=new PIXI.Container();
+
     /////////////////////////////////////// end of setup
 
     // document resize handler