Unpack or decode JavaScript after compressed

My previous article:
http://jiansenlu.blogspot.ca/2012/08/online-javascript-compressor.html
 showed how to compress JavaScript code using JavaScript online compressor.

We know there are  a lot of JavaScript codes compressed  in Jquery and Tinymce and its plugin.
They are very difficult to read without uncompressed. How to unpack or decode these codes?

We can use  online JavaScript beutifier:
http://jsbeautifier.org/

Copy your compressed JavaScript code in the text box and click "Beautify JavaScript or HTML" button to uncompress the code. This is very useful tool  when you want to modify those source codes in Jquery, Json and Tinymce.