title: Remove hbox when unselected
body: <p>I would like to create menu with 3 radio buttons(comm,med,all). Where for example Comm button should create hbox, but when the other option is selected, this hbox should disapear, but it wont.</p>
  
  <p>Could anyone set me to the right direction?
  Thank you a lot. </p>
  
  <p>Heres what Ive got:</p>
  
  <pre><code>comm.setOnAction(new EventHandler&lt;ActionEvent&gt;() {
                          @Override public void handle(ActionEvent e) {
                              if(comm.isSelected())
                                  root.add(commBox, 0,1);
                              else if(med.isSelected()||all.isSelected())
                                  root.getChildren().remove(commBox);
                          }
                      });
  </code></pre>