String lastName = playerLNFld.getText();
		if ((lastName == null) || (lastName.trim().equals(""))) {
			uspesno = false;
			playerLNImg.setImage(errorImg);
		}
		else {
			uspesno = true;
			playerLNImg.setImage(okImg);
		}

		Integer playerNumber = Integer.parseInt(playerNumberFld.getText());
		if (playerNumber == null) {
			uspesno = false;
			playerNumberImg.setImage(errorImg);
		}
		else {
			uspesno = true;
			playerNumberImg.setImage(okImg);
		}