How to Invite ALL your friends on Facebook to your Page or Group

First thing first- Forget about the Script! :

"javascript:elms=document.getElementById('all_friends').getElementsByTagName('li');for(var fid in elms){if(typeof elms[fid] === 'object'){fs.click(elms[fid]);}}"

to be added to your Firefox bookmark properties. This DOES NOT work anymore!!! Facebook from time to time comes out with its silly games to prevent its users from doing the easy way.

OKay! What you supposed to do is install Greasemonkey (Firefox Add-on) ,
easy to install and works fine!
Go to :  https://addons.mozilla.org/en-US/firefox/addon/greasemonkey/
Make sure the Add-on is enable(the Disable button displayed means already Enable).
Next is to install Greasemonkey Script for "Invite Them All"  .
Go to :  http://userscripts.org/scripts/show/89653
The install button is on the Top Right,Just click "Install" and That it, All Done.

 If you still having problem you can try with Google Chrome, 

always works! Happy Inviting friends!!!