var scroll = document.querySelector('div.uiLayer div[role=dialog] div.uiScrollableAreaWrap');
var lastScroll = -1;
var it = 0;

var INTERVAL = window.setInterval(function() {
  console.log(it);
  if (it >= 7)
  {
      window.clearInterval(INTERVAL);
      console.log('FINISH; START INVITING');
      var invites = document.querySelectorAll('div[role=dialog] div.uiScrollableAreaWrap a[ajaxify*="invite"]');
      for (var i=0; i < invites.length; ++i) invites[i].click()
  }

  if (scroll.scrollTop == lastScroll)
  {
        console.log('equal');
       it += 1;
  }
  else
       it = 0

  lastScroll = scroll.scrollTop;

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

  scroll.scrollTop += 1000;
}, 700);