public void save(String filename) throws IOException
	{
		FileOutputStream fos = null;
		ObjectOutputStream out = null;
		try
		{
			fos = new FileOutputStream(filename);
			out = new ObjectOutputStream(fos);
			out.writeObject(control);
		}
		catch (IOException ex)
		{
			throw ex;
		}
		finally
		{
			out.close();
		}
	}