public void start() {
		if (this.mIsRunning) {
			return;
		}

		// Run a thread for animation.
		this.mIsRunning = true;
		this.mIsFadingOut = false;
		this.mFadeCount = 0;
		int fps = 30;
		int tick = 1000 / fps;
		this.mTimer = new Timer(tick, this);
		this.mTimer.start();
	}