public void handle(MouseEvent event) {
				int i = line2_pp4.getSelectionModel().getSelectedIndex();
				ch.hockman.model.team.LineUp lineUp = HockmanMain.lineupTeam
						.getLineUp();
				switch (i) {
				case 0:
					lineUp.getPp4().d21 = null;
					break;
				case 1:
					lineUp.getPp4().d22 = null;
					break;
				case 2:
					lineUp.getPp4().f21 = null;
					break;
				case 3:
					lineUp.getPp4().f22 = null;
					break;
				default:
					assert (i == -1);
				}
				linesShow();
			}