TreeNode - prevend drag and drop

[KJedi]

I have a tree, all nodes should be draggable except of one type of nodes (they belong to the same class, just have different attributes). I know if node should be draggable only after it is created. How to do it? Simply setting allowChildren=false doesn't help.

I can't find were does this property (allowChildren) begin to work, where is this checked.

Any ideas?

Thanks beforehand!

[KJedi]

Please, delete this, I posted to wrong category, I am using Ext 2