public static String calMonth (int m) {
		String sMonth;
		
		switch (m){
		case 1: case 2: case 3: case 4: case 5: case 6: case 7:
		case 8: case 9:
			sMonth = "0" + Integer.toString(m);
			break;
		default:
			sMonth = Integer.toString(m);
			break;
		}
		return sMonth;
		
	}