/// <summary>
/// Loads Levels
/// </summary>
public static void Load(MenuSystem MenuSystem, bool loadingIsSlow, string levelName)
{
// Tell all the current screens to transition off.
foreach (GameScreen screen in MenuSystem.GetScreens())
screen.ExitScreen();
// Create and activate the loading screen.
LoadingScreen loadingScreen = new LoadingScreen(MenuSystem,
loadingIsSlow,
levelName);
MenuSystem.AddScreen(loadingScreen);
}