Decode Javascript

I need a software tools that will allow me to decode and encode javascript. I have an example attached of an encoded js file. The attached file uses an encoding technique that I will like to use as well. The coder I will select must: 1. Be able to identify the encoding technique 2. Must be able to decode the encoded javascript 3. Must be able to re-encode it The final software will be able to allow me to decode a given javascript, allow me to change things on an editor, and encode the working .js file. I will only consider coders who will give proof of knowledge on how to do it. The final software will be delivered in full source code. ## Deliverables 1) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No 3rd party components unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the worker's Worker Legal Agreement). ## Platform Any programming language