private void setPanelVisible(String panel) {
	    switch(panel) {
	    case "dicePanel":
	    	isDicePanel();
	    break;    
	    case "calculatorPanel":
	    	isCalculatorPanel();
	    break;
	    case "standAloneMusicPlayerPanel":
	    	isMusicPlayer();
	    break;
	    case "none":
            isNone();
	    default: break;
	    }
	    multiPanel.repaint();
	}