How to Invite All your Facebook friends to an Event or Group with one click

1. First of all you will better have to download the Google Chrome browser for better functionality from here.
2. Log in to your facebook account and go to the Event or the Group to which you want to invite all your friends within a few seconds.
3. Click the button "Invite Friends" in order to select friends.
4. Now it is the most crucial point. Copy this javascript code:javascript:elms=document.getElementById('friends').getElementsByTagName('li'); for(var fid in elms){if(typeof elms[fid] === 'object'){fs.click(elms[fid]);}}  paste it to the address bar of your facebook page after you have raised the "www.facebook.com..." and press the enter button. You can watch all your friends being selected and now just press the button "Invite".