if (presentation != null) { topFrame.addToDesktop(presentation, TopFrame.PALETTE_LAYER); presentation.setVisible(true); }
topFrame.addToDesktop(presentation, TopFrame.PALETTE_LAYER); presentation.setVisible(true);
	void showPresentation()	{		if (presentation != null) {  			topFrame.addToDesktop(presentation, TopFrame.PALETTE_LAYER);			presentation.setVisible(true);		}	}