public BackupManager(){
		String OS = System.getProperty("os.name");
		String HOME = (System.getProperty("user.home"));
		if (OS.contains("Windows 7")||OS.contains("Windows 8")) {
			BACKUP_DIR = HOME+SEVEN_DIR;
		}else if (OS.contains("Windows XP")) {
			BACKUP_DIR = HOME+XP_DIR;
		}else{
			BACKUP_DIR = HOME+MAC_DIR;
		}
	}