private void openGravityLevels()
	{
		GravityIO gIO = new GravityIO(control);
		try
		{
			gIO.load("src/data.glf");
		}
		catch (ClassNotFoundException e)
		{
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		catch (IOException e)
		{
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		maxLevel = levels.size();
		loadLevelAndMap(maxLevel, 0);
	}