jQuery Treeview.js get selected node

jQuery Treeview.js get selected node

Hi, I am using treeview.js in my MVC web app and I am struggling to understand how in jquery or javascript I can get the selected value in a button click event.

Here is part of my mark up of the treeview:
  2. <div id="container" class="fLeft">
  3.     <div id="demo1" style="" class="demo jstree jstree-0 jstree-focused jstree-default">
  4.         <ul>
  5.             <li onclick="FolderClicked(this)" id="D:\" class="jstree-closed"><ins class="jstree-icon">&nbsp;</ins><a href="#"><ins class="jstree-icon">&nbsp;</ins><span>D:\</span></a><ul>
  6.                 <li onclick="FolderClicked(this)" id="D:\63db82a6179d70b5aaa7571b" class="jstree-leaf"><ins class="jstree-icon">&nbsp;</ins><a href="#"><ins class="jstree-icon">&nbsp;</ins><span>63db82a6179d70b5aaa7571b</span></a></li>
  7.                 <li onclick="FolderClicked(this)" id="D:\75985db7de4f48c3c8c657326c35" class="jstree-leaf"><ins class="jstree-icon">&nbsp;</ins><a href="#"><ins class="jstree-icon">&nbsp;</ins><span>75985db7de4f48c3c8c657326c35</span></a></li>
  8.                 <li onclick="FolderClicked(this)" id="D:\Backup" class="jstree-leaf"><ins class="jstree-icon">&nbsp;</ins><a href="#"><ins class="jstree-icon">&nbsp;</ins><span>Backup</span></a></li>
  9.                 <li onclick="FolderClicked(this)" id="D:\Dave Johnson" class="jstree-leaf"><ins class="jstree-icon">&nbsp;</ins><a href="#"><ins class="jstree-icon">&nbsp;</ins><span>Dave</span></a></li>
  10.                 <li onclick="FolderClicked(this)" id="D:\Maria Fisher" class="jstree-leaf"><ins class="jstree-icon">&nbsp;</ins><a href="#"><ins class="jstree-icon">&nbsp;</ins><span>Mar</span></a></li>
  11.                 <li onclick="FolderClicked(this)" id="D:\Media" class="jstree-leaf"><ins class="jstree-icon">&nbsp;</ins><a href="#"><ins class="jstree-icon">&nbsp;</ins><span>Media</span></a></li>
  12.                 <li onclick="FolderClicked(this)" id="D:\System Volume Information" class="jstree-leaf"><ins class="jstree-icon">&nbsp;</ins><a href="#"><ins class="jstree-icon">&nbsp;</ins><span>System Volume Information</span></a></li>
  13.                 <li onclick="FolderClicked(this)" id="D:\VProRecovery" class="jstree-last jstree-leaf"><ins class="jstree-icon">&nbsp;</ins><a href="#"><ins class="jstree-icon">&nbsp;</ins><span>VProRecovery</span></a></li>
  14.             </ul>
  15.             </li>
  16.             <li onclick="FolderClicked(this)" id="E:\" class="jstree-last jstree-closed"><ins class="jstree-icon">&nbsp;</ins><a href="#"><ins class="jstree-icon">&nbsp;</ins><span>E:\</span></a>
  17.                 <ul>
  18.                     <li onclick="FolderClicked(this)" id="E:\Boot" class="jstree-leaf"><ins class="jstree-icon">&nbsp;</ins><a href="#"><ins class="jstree-icon">&nbsp;</ins><span>Boot</span></a></li>
  19.                     <li onclick="FolderClicked(this)" id="E:\System Volume Information" class="jstree-last jstree-leaf"><ins class="jstree-icon">&nbsp;</ins><a href="#"><ins class="jstree-icon">&nbsp;</ins><span>System Volume Information</span></a></li>
  20.                 </ul>
  21.             </li>
  22.         </ul>
  23.     </div>
  24. </div>
As I said earlier when the user clicks a button I want to get the selected node of the treeview can anyone please tell me how to do this?

Thanks, Dave.