GreaseMonkey user script. Unchecks all inputs on the document

uncheck_unwanted.user.js

// ==UserScript==
// @name        Uncheck Flash "Optional" Offer
// @namespace   bjorn
// @description No one wants McAffee
// @include     http://get.adobe.com/*
// @version     1
// @grant       none
// ==/UserScript==

document.addEventListener('DOMContentLoaded', function () {
  setTimeout(function loop() {
    console.log('yeah')
    var chb = $('#offerCheckbox');
    if(!chb.length) {
     setTimeout(loop, 300);
    }
    chb.removeAttr('checked')
    chb.trigger('change');
  }, 300);
});