+$g_arrows{up} = Gtk2::Arrow->new('up', 'none');
+$g_arrows{up}->show();
+$g_arrows{down} = Gtk2::Arrow->new('down', 'none');
+$g_arrows{down}->show();
+$g_arrows{left} = Gtk2::Arrow->new('left', 'none');
+$g_arrows{left}->show();
+$g_arrows{right} = Gtk2::Arrow->new('right', 'none');
+$g_arrows{right}->show();
+