convertToUTF8

	protected static String convertToUTF8(String s) {
		if (s == null || s.length() == 0)
			return s;
		byte[] b;
		try {
			b = s.getBytes("ISO8859_1");
			for (int i = 0; i < b.length; i++)
				if (b[i] + 0 < 0)
					return new String(b, "UTF-8");
			b = s.getBytes("UTF-8");
			for (int i = 0; i < b.length; i++)
				if (b[i] + 0 < 0)
					return new String(b, "UTF-8");
		} catch (Exception e) {
		}
		return s;
	}