javascript plugin

[eluser]mehike[/eluser]
I want use some javascript menu plugin (or contextmenu?) What is best for it?

situation is:
I have a tree (jsquery plugin: jqtree) with childnodes (3 sublevels) and I can catch click event in every node and I want make a small menu where I can select node, delete node, rename node or add new node. What is best choice of js plugins to build that kind of menu? or can I do another way this?
some suggestions?