Userscript code works in Firefox but not in Chrome

Question

I am using this userscript in Firefox that counts unread tweets in Tweetdeck and colors the new tweets.

It works fine with Firefox (Greasemonkey), but in Chrome I'm not getting anything. Here is the code:

// ==UserScript==
// @name     TweetDeck Unread Notifications
// @include  https://tweetdeck.twitter.com
// @include  https://tweetdeck.twitter.com/*
// @grant    none
// ==/UserScript==
var head, style;
head = document.getElementsByTagName('head')[0];
style = document.createElement('style');
style.type = 'text/css';
style.innerHTML = ".tdUnreadUnread { background-color: #444444; }";
head.appendChild(style);

function animate_bg(ele, from, to) {
ele.css("background-color", "rgba(68, 68, 68, " + (from += from > to ? -1 :    1) / 10 + ")");
if (from != to) setTimeout(function () {
    animate_bg(ele, from, to)
}, 20);
}

var counter = 0;
var loadingTime = true;

unsafeWindow.tdUnreadRefresh = function () {
var detail = $(".js-detail-content");
$("article").each(function (i) {
    if (detail.length == 0) {
        if (!$(this).hasClass("tdUnreadUnread")) {
            $(this).addClass("tdUnreadUnread");
            if (!loadingTime) {
                counter++;
                $(this).mouseenter(function () {
                    counter--;
                    $(this).off("mouseenter");
                    animate_bg($(this), 10, 0);
                });
            } else animate_bg($(this), 10, 0);
        }
    }
});

if (counter > 0) {
    document.title = "(" + counter + ") TweetDeck";
} else {
    document.title = "TweetDeck"
       }
}
  unsafeWindow.tdUnreadLoadingOver = function () {
  loadingTime = false;
  }

  setInterval("tdUnreadRefresh()", 1000);
  setTimeout("tdUnreadLoadingOver()", 30000);

Any help with this is much appreciated. Thanks Bob

Answer 1

IIRC the object unsafewindow is specific to Mozilla Firefox and isn't supported with Google Chrome.
Instead of using unsafewindow, you might want to export your functions using the exportFunction feature: https://developer.mozilla.org/en-US/docs/Mozilla/Tech/XPCOM/Language_Bindings/Components.utils.exportFunction