Scratch Messages in Title (userscript)

// ==UserScript==
// @name       Scratch Messages in Title
// @version    0.1
// @description Updates the page title to show number of messages (updates every 5 seconds)
// @match      http://scratch.mit.edu/*
// @copyright  2014, Josh Pullen
// ==/UserScript==

var basetitle = document.getElementsByTagName("title")[0].innerHTML;

setInterval(function(){
    if (parseInt($(".notificationsCount").html()) == 0) {
      document.title = basetitle;
    } else {
        document.title = "(" + $(".notificationsCount").html() + ") " + basetitle;
    }
    },2000);