torii / popup.js fix for IE11

popup.js

// IE11 version hack fix...
var ieversion = 0;
var ua = window.navigator.userAgent;
if (ua.indexOf('Trident/') != -1) {
  ieversion = ua.substring(ua.indexOf('rv:') + 3);
  ieversion = parseInt('' + ieversion, 10);
}
// in IE11 window.attachEvent was removed.
// if IE11 *or* window.attachEvent
if (window.attachEvent || ieversion >= 11) {
  postMessageFixed = function postMessageFixed(win, data) {
    win.postMessageWithFix(postMessagePrefix+data, postMessageDomain);
  };
  window.postMessageWithFix = function postMessageWithFix(data, domain) {
    setTimeout(function(){
      window.postMessage(data, domain);
    }, 0);
  };
} else {
  postMessageFixed = function postMessageFixed(win, data) {
    win.postMessage(postMessagePrefix+data, postMessageDomain);
  };
}