NSView* mCurrentContentView;
@interface BrowserContentView : NSView{  IBOutlet BookmarkToolbar  *mBookmarksToolbar;  IBOutlet NSView           *mBrowserContainerView;   // manages tabs and web content  IBOutlet NSView           *mBookmarkManagerView;    // swapped in and out by activating bm manager, replacing browser container  IBOutlet NSView           *mStatusBar;    NSView* mCurrentContentView;   // either the bookmark manager or the browser container, whichever is visible}