gistfile1.txt

window.changeURL = function(photo) {
        // not HTML history API browsers
        if ($('html').hasClass('ie8') || $('html').hasClass('ie9')) {
            window.location = photo.url;
        }
        else {
            var stateObj = { video: 'xfactor' };
            history.pushState(stateObj, photo.description, photo.url);
        }
    };

    PhotosViewer.prototype.changeURL = function (stateObj, url, title) {
        // not HTML history API browsers
        if (!Modernizr.history) {
            window.location = photo.url;
            return;
        }

        history.pushState(stateObj, title, url);
    };