how to show TreeView in DropDown

I am trying to build an application in cakephp 1.3. i have a treeview menu in my view. I have used jquery dynatree for this. This tree works using ajax. I send my data from controller to view in json format. Now my requirement is that I want to show this treeview in a dropdown. If any body can refer me any jquery api, or anyother good solution. to be more clear please visit this link jQuery TreeView Menu (v1.4) I want demo three in my dropdown menu. Waiting for your expert suggestion. thanks