     </li>
                      <li class='expanded' id='tree3id4'>
                        Document with some children (expanded on init)
                        <ul>
                          <li id='tree3id4.1'>
                            Sub-item 4.1 (active and focus on init)
                            <ul>
                              <li id='tree3id4.1.1'>
                                Sub-item 4.1.1
                              </li>
                              <li id='tree3id4.1.2'>
      