private String secondsToString(int time) {
		int min = time / 60;
		int sec = time % 60;
		if(min<10)
		{
			if(sec<10)
				return "0"+min+":0"+sec;
			return "0"+min+":"+sec;
		}
		if(sec==0)
			return ""+min+":00";
		if(sec<10)
			return ""+min+":0"+sec;
		return ""+min+":"+sec;
	}