private void changeStat(Button b, boolean plus) {
		if (plus && (valuables > 0)) {
			for (String s : plusButtonMap.keySet()) {
				if (plusButtonMap.get(s).equals(b)) {
					supplyMap.put(s, supplyMap.get(s) + buyAmtMap.get(s));
					valuables -= supplyCost;
					supplyTextboxMap.get(s).setText(s + ": " + supplyMap.get(s) + "\nCost: " + supplyCost);
				}
			}
		} else {
			for (String s : minusButtonMap.keySet()) {
				if (minusButtonMap.get(s).equals(b)) {
					supplyMap.put(s, supplyMap.get(s) - buyAmtMap.get(s));
					valuables += supplyCost;
					supplyTextboxMap.get(s).setText(s + ": " + supplyMap.get(s) + "\nCost: " + supplyCost);
				}
			}
		}
	}