How to create the title alert effect like Facebook?

Code:

(function () {var original = document.title;var timeout;window.flashTitle = function (newMsg, howManyTimes) {    function step() {        document.title = (document.title == original) ? newMsg : original;        if (--howManyTimes > 0) {            timeout = setTimeout(step, 1000);        };    };    howManyTimes = parseInt(howManyTimes);    if (isNaN(howManyTimes)) {        howManyTimes = 5;    };    cancelFlashTitle(timeout);    step();};window.cancelFlashTitle = function () {    clearTimeout(timeout);    document.title = original;};}());

Usage:

flashTitle("New Message from Matt Lunn");

... or...

flashTitle("New Message from John Smith", 10); // toggles it 10 times.

Set an interval that switches the title every few seconds. Untested code:

function flashTitle(pageTitle, newMessageTitle){    if (document.title == pageTitle)    {        document.title = newMessageTitle;    }    else    {        document.title = pageTitle;    }}setInterval("flashTitle('Facebook', 'New message from John Doe!')", 800);

setInterval("var x='www.WHAK.com/Packer/',y='WHAK.com/Packer/',z=document;z.title=z.title==x?y:x",900);