[flexcoders] Getting a node to accept dropped nodes in a tree

[chrislpigg]

Here is my xml structure.

<node>
 <node1>
 <node2>
 <node3>
 <node4>
 <node5>
 <node6>
 <node7>
</node>

I'm trying to drop <node1> onto <node2> but the tree drops it after
<node2>.  Does anyone know how to get the tree to make <node2> a
branch when you drop <node1> onto it.