From db6a07d4270ce4ab11db509dd336f2b51a3e269d Mon Sep 17 00:00:00 2001
From: Rob Arnold <tellrob@gmail.com>
Date: Wed, 1 Oct 2008 02:05:27 -0400
Subject: [PATCH] Fix Aero-Glass on panels (round 2) for bug 451300 r=vlad

---
 widget/src/windows/nsWindow.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/widget/src/windows/nsWindow.cpp b/widget/src/windows/nsWindow.cpp
index 9bfee0e4ddff..d1fc9c8c568e 100644
--- a/widget/src/windows/nsWindow.cpp
+++ b/widget/src/windows/nsWindow.cpp
@@ -5534,7 +5534,9 @@ DWORD nsWindow::WindowStyle()
 
     case eWindowType_popup:
       if (mTransparencyMode == eTransparencyGlass) {
-        style = WS_OVERLAPPED;
+        /* Glass seems to need WS_CAPTION or WS_THICKFRAME to work.
+           WS_THICKFRAME has issues with autohiding popups but looks better */
+        style = WS_POPUP | WS_THICKFRAME;
       } else {
         style = WS_OVERLAPPED | WS_POPUP;
       }