gistfile1.txt

            var notifyParent = function (eventName, eventData) {
                {% comment %}
                // Try to trigger event on Bus directly.

                // NOTE: This only works because refreshparent.html should always be
                // on the same URL as the Next iframe
                //
                // Why not use postMessage? Because IE8 and IE9 don't support
                // postMessage between a popup window and its parent. Yep.
                {% endcomment %}

                var opener = window.opener;
                if (opener && opener.DISQUS.Bus) {
                    opener.DISQUS.Bus.trigger(eventName, eventData);
                }
            };