You can invite all your friends, by using this simple technique. It works in FireFox, Chrome and Safari Browser but might not work when using Internet Explorer.

Just copy this code:

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

After you copy the code above, click "Suggest your friends" button (ON THE WALL TAB OF THIS FAN PAGE) and paste the code in the browsers address bar and hit enter on your keyboard. Finally, click "Send Invitations" after all your friends are highlighted.

That's it! Your done... Remember it must be on the fan page wall after clicking "Suggest to friends!"