--- old/src/macosx/classes/sun/lwawt/macosx/CPlatformWindow.java	2014-05-14 12:25:18.000000000 +0400
+++ new/src/macosx/classes/sun/lwawt/macosx/CPlatformWindow.java	2014-05-14 12:25:18.000000000 +0400
@@ -119,6 +119,7 @@
     static final int NONACTIVATING = 1 << 24;
     static final int IS_DIALOG = 1 << 25;
     static final int IS_MODAL = 1 << 26;
+    static final int IS_POPUP = 1 << 27;
 
     static final int _STYLE_PROP_BITMASK = DECORATED | TEXTURED | UNIFIED | UTILITY | HUD | SHEET | CLOSEABLE | MINIMIZABLE | RESIZABLE;
 
@@ -318,6 +319,7 @@
             styleBits = SET(styleBits, TEXTURED, false);
             // Popups in applets don't activate applet's process
             styleBits = SET(styleBits, NONACTIVATING, true);
+            styleBits = SET(styleBits, IS_POPUP, true);
         }
 
         if (Window.Type.UTILITY.equals(target.getType())) {
--- old/src/macosx/native/sun/awt/AWTWindow.m	2014-05-14 12:25:19.000000000 +0400
+++ new/src/macosx/native/sun/awt/AWTWindow.m	2014-05-14 12:25:19.000000000 +0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2014, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -252,6 +252,9 @@
     self.ownerWindow = owner;
     [self setPropertiesForStyleBits:styleBits mask:MASK(_METHOD_PROP_BITMASK)];
 
+    if (IS(self.styleBits, IS_POPUP)) {
+        [self.nsWindow setCollectionBehavior:NSWindowCollectionBehaviorCanJoinAllSpaces | (1 << 8) /*NSWindowCollectionBehaviorFullScreenAuxiliary*/];
+    }
     return self;
 }