Invite people to facebook page

invite_advanced.js

var INVITE_PEOPLE_COUNT = 100;

var scroll     = document.querySelector('form[action*="invite"] .fbProfileBrowserResult'); 
var lastScroll = -1; 
var it         = 0; 

var inviteIt    = 0;
var allInvites  = [];
var invitePause = 1000; // ms

function doInvite()
{
    console.log('Start inviting');
    var S = window.localStorage;

    var userInvited = 0;

    var pageId = document.querySelector('form[action*="invite"] div[data-batch*="page_id"]')
                    .getAttribute('data-batch').match(/\d+/)[0];

    console.log('page id: ' + pageId);
    var alreadyInvitedList = [];
    var storage = S.getItem(pageId);
    if (storage != undefined)
        alreadyInvitedList = JSON.parse(storage);

    var accounts = document.querySelectorAll('form[action*="invite"] .fbProfileBrowserResult li');
    console.log('Found invite buttons: ' + accounts.length);

    var INTERVAL2 = window.setInterval(function() {
        if (inviteIt >= accounts.length || userInvited == INVITE_PEOPLE_COUNT)
        {
            window.clearInterval(INTERVAL2);
            S.setItem(pageId, JSON.stringify(alreadyInvitedList));
            console.log('FINISH');
        }
        else
        {
            inviteIt += 1;

            var account = accounts[inviteIt]; 
            var aid     = account.getAttribute('data-uid');

            if (alreadyInvitedList.indexOf(aid) == -1)
            {
                console.log('Invite user: ' + aid);
                alreadyInvitedList.push(aid);

                account.querySelector('a.uiButton').click();

                userInvited += 1;
            }
            else
            {
                console.log('Already invited: ' + aid);
            }
        }

    }, invitePause);
}

var INTERVAL = window.setInterval(function() { 
    console.log('Wait...');
    if (it >= 7) 
    { 
        doInvite();
        window.clearInterval(INTERVAL);
    } 

    it = (scroll.scrollTop == lastScroll) ? (it+1) : 0;
    lastScroll = scroll.scrollTop; 

    var seeMore = document.querySelector('#reaction_profile_pager .uiMorePagerPrimary'); 
    if (seeMore)
        seeMore.click(); 

    scroll.scrollTop += 1000; 
}, 400);

hello where can i get a script to add my facebook friend to a facebook group.