--- a/widget/cocoa/nsCocoaWindow.mm
+++ b/widget/cocoa/nsCocoaWindow.mm
@@ -880,21 +880,19 @@ nsCocoaWindow::Show(bool bState)
                         object:@"org.mozilla.gecko.PopupWindow"];
       }
 
       // If a parent window was supplied and this is a popup at the parent
       // level, set its child window. This will cause the child window to
       // appear above the parent and move when the parent does. Setting this
       // needs to happen after the _setWindowNumber calls above, otherwise the
       // window doesn't focus properly.
-      if (nativeParentWindow && mPopupLevel == ePopupLevelParent) {
+      if (nativeParentWindow && mPopupLevel == ePopupLevelParent)
         [nativeParentWindow addChildWindow:mWindow
                             ordered:NSWindowAbove];
-        [mWindow setLevel:NSPopUpMenuWindowLevel];
-      }
     }
     else {
       NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
       if (mWindowType == eWindowType_toplevel &&
           [mWindow respondsToSelector:@selector(setAnimationBehavior:)]) {
         NSWindowAnimationBehavior behavior;
         if (mIsAnimationSuppressed) {
           behavior = NSWindowAnimationBehaviorNone;
@@ -1372,17 +1370,16 @@ nsCocoaWindow::HideWindowChrome(bool aSh
   // Reparent the content view.
   [mWindow setContentView:contentView];
   [contentView release];
 
   // Reparent child windows.
   enumerator = [childWindows objectEnumerator];
   while ((child = [enumerator nextObject])) {
     [mWindow addChildWindow:child ordered:NSWindowAbove];
-    [mWindow setLevel:NSPopUpMenuWindowLevel];
   }
 
   // Show the new window.
   if (isVisible) {
     bool wasAnimationSuppressed = mIsAnimationSuppressed;
     mIsAnimationSuppressed = true;
     Show(true);
     mIsAnimationSuppressed = wasAnimationSuppressed;