Open stress options

def on_stress_menu_open(self, widget):
        """Open stress options"""
        self.original_widget = urwid.Overlay(self.stress_menu.main_window,
                                             self.original_widget,
                                             ('relative', self.left_margin),
                                             self.stress_menu.get_size()[1],
                                             ('relative', self.top_margin),
                                             self.stress_menu.get_size()[0])