Javascript: trivial lib for writing game-style skill tree graphs

Question

I want to do something like this skill tree. What I dislike about that beautiful graph is that background is a standard Photoshop layout, and to change that skill tree I need to rewrite a layout.

Question: Can you suggest me a javascript lib which will satisfy 2 requirements:

1. Can build a beautiful graph
2. Is pretty easy to customize (i.e. replace connection arrows style, etc.)

Answer 1

You might be looking for this: https://github.com/352Media/skilltree, it's made with Knockout.js.