public final static void quietSleep(int milliSeconds) {

		if (milliSeconds <= 0) {
			return;
		}

		if (Config.getDebug()) {
			int min = Math.round(milliSeconds / 60000);
			int sec = Math.round((milliSeconds / 1000) % 60);
			Output.println("Sleep for " + min + ":" + sec + " (" + milliSeconds
					+ ")", Output.DEBUG);
		}

		try {
			Thread.sleep(milliSeconds);
		} catch (InterruptedException e) {
		}
	}