colleowino

document.addEventListener('DOMContentLoaded', function() {
  var checkPageButton = document.getElementById('checkPage');
  checkPageButton.addEventListener('click', function() {

    chrome.tabs.getSelected(null, function(tab) {
      d = document;

      var f = d.createElement('form');
      f.action = 'http://gtmetrix.com/analyze.html?bm';
      f.method = 'post';