daysBetween

	public int daysBetween(String dateStr) throws ParseException {
		Date today = new Date();
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
		Date compareDate = sdf.parse(dateStr);
		
		Calendar cal = Calendar.getInstance();
		cal.setTime(compareDate);
		long time1 = cal.getTimeInMillis();
		
		cal.setTime(today);
		long time2 = cal.getTimeInMillis();
		long between_days = (time2 - time1) / (1000 * 3600 * 24);

		return Integer.parseInt(String.valueOf(between_days));
	}