draggable Div in droptarget Div?

[Kia]

Hi
I have this view :

<div class="draggable" style="width: 50px;height: 50px;background-color: chartreuse;">Test</div>

<div id="droptarget">

    <div class="test1" style="background-color: aqua; width: 200px; height: 200px;">
      Start dragging.
      </div>

    <div class="test2" style="background-color: brown; width: 200px; height: 200px;">

        Start dragging.
     </div>

</div>

when draggable Div added to test1 Div or test2  i want the draggable Div can switch between the test1 or test2.
How do i ?
Tanx.

[Nohinn]

You will need the latest commercial version of Kendo UI Web (SP version) and use as an example this demo:
http://demos.kendoui.com/web/dragdrop/area.html