auto redirect for tumblr url changes

changeblog.js

        <script>
            var oldname = 'barkentin';
            var newname = 'tevruden';
            var page = document.URL;
            if(page.indexOf("/post/") > -1) {
                var url = page.replace(oldname, newname);
                setInterval(function () { window.location.href = url;}, 2000);
            }
            if(page.indexOf("/tagged/") > -1) {
                var url = page.replace(oldname, newname);
                setInterval(function () { window.location.href = url;}, 2000);
            }
        </script>