private static String openFile(String fileName) {

		String returnValue = "";
		FileReader file = null;

		try {
			file = new FileReader(fileName);
			BufferedReader reader = new BufferedReader(file);
			String line = "";

			while ((line = reader.readLine()) != null) {
				returnValue += line + "\n";
			}

			reader.close();
			file.close();
		} catch (FileNotFoundException e) {
			return null;
		} catch (IOException e) {
			return null;
		}
		return returnValue;
	}