EasyTree plugin JQuery is a small but lightweight JS Menu system designed to be easy to set up but still have a rich set of features and be capable of more complex scenarios.
A basic EasyTree menu can be seen in use for the left navigation of this site.
The plugin EasyTree requires Jquery 1.7 or later.
This is the link of official site with examples of various Tree.
I have used this plugin many time, for other information or problem contact me or write here in comment!!!