public void actionPerformed(ActionEvent ae) {
						if (((JCheckBox) ae.getSource()).isSelected()) {
							jLbNodeWidth.setEnabled(true);
							m_jTfNodeWidth.setEnabled(true);
							jLbNodeHeight.setEnabled(true);
							m_jTfNodeHeight.setEnabled(true);
						} else {
							jLbNodeWidth.setEnabled(false);
							m_jTfNodeWidth.setEnabled(false);
							jLbNodeHeight.setEnabled(false);
							m_jTfNodeHeight.setEnabled(false);
							setAppropriateSize();
							setAppropriateNodeSize();
						}
					}