private void setupButtons() {
		// Air button
		String airText = VirusStatistics.isAirTransmission() ? "Air" : "Air ("
				+ VirusStatistics.getAirTransmissionCost() + ")";
		Color airColor = VirusStatistics.isAirTransmission() ? BUTTON_BUY_COLOR : BUTTON_COLOR;
		airButton = new Button(20, 50, BUTTON_WIDTH, BUTTON_HEIGHT, BUTTON_LINE_WIDTH, airText,
				airColor, BUTTON_LINE_COLOR);

		// Water button
		String waterText = VirusStatistics.isWaterTransmission() ? "Water" : "Water ("
				+ VirusStatistics.getWaterTransmissionCost() + ")";
		Color waterColor = VirusStatistics.isWaterTransmission() ? BUTTON_BUY_COLOR : BUTTON_COLOR;
		waterButton = new Button(20, 95, BUTTON_WIDTH, BUTTON_HEIGHT, BUTTON_LINE_WIDTH, waterText,
				waterColor, BUTTON_LINE_COLOR);

		// Plague button
		String plagueText = VirusStatistics.isPlagueTransmission() ? "Plague" : "Plague ("
				+ VirusStatistics.getPlagueTransmissionCost() + ")";
		Color plagueColor = VirusStatistics.isPlagueTransmission() ? BUTTON_BUY_COLOR
				: BUTTON_COLOR;
		plagueButton = new Button(20, 140, BUTTON_WIDTH, BUTTON_HEIGHT, BUTTON_LINE_WIDTH,
				plagueText, plagueColor, BUTTON_LINE_COLOR);

		// Livestock button
		String livestockText = VirusStatistics.isLivestockTransmission() ? "Livestock"
				: "Livestock (" + VirusStatistics.getPlagueTransmissionCost() + ")";
		Color livestockColor = VirusStatistics.isLivestockTransmission() ? BUTTON_BUY_COLOR
				: BUTTON_COLOR;
		livestockButton = new Button(20, 185, BUTTON_WIDTH, BUTTON_HEIGHT, BUTTON_LINE_WIDTH,
				livestockText, livestockColor, BUTTON_LINE_COLOR);
	}