Title Scroller (create bookmarlet with: http://mrcoles.com/bookmarklet/)

titlescroller.js

            (function () {
                var options = {
                    textScrollInterval: 400,
                    textPrefix: "\u25B6 ",
                    textReplace: /\u25B6\s?/g,
                    textSpace: "\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0"
                };

                var isTitleChanging = false,
                    sourceTitle = document.title.replace(options.textReplace, ""),
                    movingTitle = sourceTitle,
                    titleChanged = function () {
                        if (isTitleChanging) return;

                        isTitleChanging = true;

                        sourceTitle = document.title.replace(options.textReplace, "");
                        movingTitle = sourceTitle,

                        isTitleChanging = false;
                    },
                    oldWindowLoad = window.onload;

                window.onload = function () {
                    var titleEl = document.getElementsByTagName("title")[0];
                    var docEl = document.documentElement;

                    if (docEl && docEl.addEventListener) {
                        docEl.addEventListener("DOMSubtreeModified", function (evt) {
                            var t = evt.target;
                            if (t === titleEl || (t.parentNode && t.parentNode === titleEl)) {
                                titleChanged();
                            }
                        }, false);
                    } else {
                        document.onpropertychange = function () {
                            if (window.event.propertyName == "title") {
                                titleChanged();
                            }
                        };
                    }

                    if (oldWindowLoad) {
                        oldWindowLoad();
                    }
                };

                setInterval(
                    function () {
                        isTitleChanging = true;

                        movingTitle = movingTitle.substr(2);

                        if (movingTitle.length < sourceTitle.length) {
                            movingTitle += options.textSpace + sourceTitle;
                        }

                        document.title = options.textPrefix + movingTitle;

                        isTitleChanging = false;
                    },
                    options.textScrollInterval
                );
            })();