title: jQuery change page's title when user in a different tab
body: <p>I have live chat on my page. <strong>I want to change the title</strong> (with something moving like in omegle.com) <strong>when a new message is received and the user is not in the same tab as the live chat.</strong> When the user returns to the tab, the title would return to normal.</p>
  
  <p>I guess it should be done by jQuery. Do you know any plugins or how can I do that?</p>