// ==UserScript==
// @name         Google redirection
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Change from other Google site to the international site.
// @author       loikein
// @include      *://*.google.de/*
// @include      *://*.google.co.jp/*
// @include      *://*.google.com.hk/*
// @grant        none
// @downloadURL none
// ==/UserScript==

(function() {
    'use strict';
    var link = String(window.location.href).replace(/google[\.a-z]*/, "google.com");
    window.open(link, "_self");
})();