By Jeremy C
Has 4 other scripts.
// ==UserScript==
// @name Google Interface
// @namespace (none)
// @description Allows links to be customized on google.com
// @include http://*.google.com/
// @include http://google.com/
// @include http://www.google.com/webhp
// ==/UserScript==
// Original Links
var Web = "<a href='http://www.google.com/url?q=/webhp'>Web</a>";
var Images = "<a href='http://images.google.com/imghp?tab=wi'>Images</a>";
var Video = "<a href='http://video.google.com/?tab=wv'>Video</a>";
var News = "<a href='http://news.google.com/nwshp?tab=wn'>News</a>";
var Maps = "<a href='http://maps.google.com/maps?tab=wl'>Maps</a>";
var Gmail = "<a href='http://mail.google.com/mail?tab=wm'>Gmail</a>";
// Links listed under the "more" column
var BlogSearch = "<a href='http://blogsearch.google.com/?tab=wb'>Blog Search</a>";
var Blogger = "<a href='http://www.blogger.com/?tab=wj'>Blogger</a>";
var Books = "<a href='http://books.google.com/bkshp?tab=wp'>Books</a>";
var Calendar = "<a href='http://www.google.com/calendar?tab=wc'>Calendar</a>";
var Documents = "<a href='http://docs.google.com/?tab=wo'>Documents</a>";
var Finance = "<a href='http://finance.google.com/finance?tab=we'>Finance</a>";
var Groups = "<a href='http://groups.google.com/grphp?tab=wg'>Groups</a>";
var Labs = "<a href='http://labs.google.com/?tab=wz'>Labs</a>";
var Orkut = "<a href='http://www.orkut.com/?tab=w0'>Orkut</a>";
var Patents = "<a href='http://www.google.com/ptshp?tab=wt'>Patents</a>";
var Photos = "<a href='http://picasaweb.google.com/home?tab=wq'>Photos</a>";
var Products = "<a href='http://www.google.com/prdhp?tab=wf'>Products</a>";
var Reader = "<a href='http://www.google.com/reader?tab=wy'>Reader</a>";
var Scholar = "<a href='http://scholar.google.com/schhp?tab=ws'>Scholar</a>";
// Other links
var Linux = "<a href='http://www.google.com/linux'>Linux</a>";
var Bookmarks = "<a href='http://www.google.com/bookmarks'>Bookmarks</a>";
var Code = "<a href='http://www.google.com/codesearch'>Code</a>";
var Directory = "<a href='http://www.google.com/dirhp?cat=gwd/Top'>Directory</a>";
var Notebook = "<a href='http://www.google.com/notebook/searchNotebook'>Notebook</a>";
// Set what links you want to appear at the top of Google
var myGoogleLinks = new Array(Web,Images,Video,Maps,Gmail,Reader,News,Linux,Products,Scholar,Groups,Labs);
// Replace old gbar with the new one
var gbar = document.getElementById("gbar");
var newGbar = document.createElement("div");
gbar.parentNode.replaceChild(newGbar,gbar);
newGbar.setAttribute("id","gbar");
// Adds custom links
for(var i=0; i<myGoogleLinks.length; i++) {
var gb1 = document.createElement("div");
gb1.setAttribute("class","gb1");
gb1.innerHTML = myGoogleLinks[i];
newGbar.appendChild(gb1);
}