This script re-creates the old "You have new messages" bar (the so-called "Orange Bar of Doom"). To use it, add the following code to Special:Mypage/common.js (or Special:Mypage/vector.js, or any other skin-specific page for the skin you are using):

importScript('User:Writ Keeper/Scripts/orangeBar.js'); //Linkback: [[User:Writ Keeper/Scripts/orangeBar.js]]

If you wish to remove the notifications-box from the top right of your screen, you can also add to Special:Mypage/common.css (or your skin's specific CSS page):

#pt-notifications {display: none}