new vk inviter v.0.2

function doSetTimeout(i) {
  setTimeout(function() { 
    document.querySelectorAll('.flat_button.button_small.button_wide:not(.secondary):not(.button_disabled):not([style])')[i].click(); 
  }, 1000);
}; 
for (index = 0; index < 21; ++index) {
  doSetTimeout(index);
}