private void about_Click(object sender, RoutedEventArgs e)
 {
     Grid mainMenu = (Grid)Parent;
     mainMenu.Children.Clear();
     About_control showAbout = new About_control();
     mainMenu.Children.Add(showAbout);
 }
 private void about_Click(object sender, RoutedEventArgs e)
 {
     Grid mainMenu = (Grid)Parent;
     mainMenu.Children.Clear();
     window.BackgroundMusic_Control.changeMuteButtonBlack();
     About_control showAbout = new About_control();
     mainMenu.Children.Add(showAbout);
 }