google logo script

google-logo.user.js

// ==UserScript==
// @name        Google Logo
// @namespace   test
// @include     http://*.google.*/
// @include     https://*.google.*/
// @version     1
// ==/UserScript==

var oldLogo = document.getElementById('hplogo');
var newLogo = document.createElement('img');
newLogo.id = "User-Logo";
newLogo.border = 'no'
newLogo.src = 'http://www.google.com/logos/2012/Googles_14th_Birthday-2012-2-hp.gif';
oldLogo.parentNode.replaceChild(newLogo, oldLogo);