[upgrade] Create handle option

[trojkat]

When you got links inside ul list sometimes when you click them you move whole li element. Is there a way to specify handle element?

Example:

          <li><span class="handle">move me</span> <a href="http://google.com/">Google</a></li>
          <li><span class="handle">move me</span> <a href="http://jquery.com/">jQuery</a></li>
    </ul>```

```javascript
$('#tree1').tree({
    data: data,
    handle: '.handle'
});

Demo - http://demo.wil-linssen.com/jquery-sortable-ajax/

[mbraak]

Yes, you can use the 'onIsMoveHandle' option. See http://mbraak.github.com/jqTree/#tree-options-onismovehandle

[trojkat]

Omg, sorry, I'm blind :-/