I have a problem that I can't solve and need you help.

I call function BeforeClientDrop(sourceNode, destNode)  and set it return false  to delay state drop from treeview. After I do some thing  example click a button . I want that tree cotinue drop that node.
I want to ask that , How can I make function radtreeview_nodedrop  continue  execute after I click  a button?
Thanks very much!