private void Button_return_Click(object sender, RoutedEventArgs e)
        {
            Necrophages_Index ind = new Necrophages_Index();

            Clear();
            LoadPage.NavigationService.Navigate(ind);
        }
        private void Button_Necrophages_Click(object sender, RoutedEventArgs e)
        {
            ChangePage();
            Necrophages_Index necrophages = new Necrophages_Index();

            LoadPage.NavigationService.Navigate(necrophages);
        }