hide google toolbar's unnecessary items.

hide_google_toolbar.user.js

// ==UserScript==
// @name           google toolbar
// @namespace      basyura.org
// @include        https://www.google.com/*
// @include        http://www.google.co.jp/*
// @include        http://translate.google.co.jp/*
// ==/UserScript==

(function () {
  function $(id) {
    return document.getElementById(id);
  }
  function hide(id) {
    var ele = $(id);
    if (ele !== null) {
      ele.style.display = 'none';
    }
  }
  //hide("onegoogbar");
  //hide("mngb");
  //hide("gb");
  hide("gb_119");
  hide("gbg6");
  hide("gbgs1");
  hide("gbgs3");
  if ($('gbi4i') !== null) {
    $('gbi4i').src = "";
  }
  if ($("gbmpi") !== null) {
    $('gbmpi').src = "";
  }
  if ($('gbi4m1') !== null) {
    $('gbi4m1').innerHTML = '';
  }
})();