String countryCode = JFritz.getProperty("country.code", "49");
String countryCode = JFritz.getProperty("country.code", "+49");
	public String getAreaNumber() {		String countryCode = JFritz.getProperty("country.code", "49"); //$NON-NLS-1$		String areaPrefix = JFritz.getProperty("area.prefix", "0"); //$NON-NLS-1$		if (number.startsWith("+" + countryCode)) //$NON-NLS-1$			return areaPrefix + number.substring(countryCode.length() + 1);		return number;	}