Better Baidu

Remove the 'right' contents. Add Bing and Google search buttons.

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name        Better Baidu
// @namespace   feifeihang.info
// @description Remove the 'right' contents. Add Bing and Google search buttons.
// @include     http://www.baidu.com/
// @include     https://www.baidu.com/
// @include     http://www.baidu.com/s*
// @include     https://www.baidu.com/s*
// @include     http://www.baidu.com/baidu*
// @include     https://www.baidu.com/baidu*
// @version     1.2.3
// @grant       none
// ==/UserScript==
(function (window, document, undefined) {
  var hasAdded = false;
  // define search engines' urls.
  var URLS = {
    'Bing': 'http://www.bing.com/search?q=',
    'Google': 'http://www.google.com/#q='
  };
  // now, let's go implement keywords highlighting.
  var resultContainerQuery = '#content_left';
  var buffer = '';
  watch(resultContainerQuery, buffer);
  var COLORS = [
    '#FFFF00',
    '#FFCC00',
    '#CCCCFF',
    '#00CCFF',
    '#33CCCC',
    '#FF8080',
    '#008000',
    '#FFFF99',
    '#808000',
    '#FFFFCC'
  ];
  var counter = 0;
  var topBtn;
  window.addEventListener('scroll', function () {
    if (window.pageYOffset >= 20) {
      topBtn.style.display = 'block';
    } 
    else {
      topBtn.style.display = 'none';
    }
  });
  function watch(resultContainerQuery, buffer) {
    setInterval(function () {
      // first, remove the annoying right contents.
      if (document.querySelector('#content_right *')) {
        var all = document.querySelectorAll('#content_right *:not(.better-baidu-reserve)');
        all = Array.prototype.slice.apply(all);
        all.map(function (element) {
          element.remove();
        });
        topBtn = document.createElement('div');
        // now, add go-to-top button.
        topBtn.appendChild(document.createTextNode('TOP'));
        var displayStr = window.pageYOffset >= 20 ? 'block' : 'none';
        topBtn.style = 'display: ' + displayStr + '; position: fixed; bottom: 10px; right: 10px; line-height: 50px;' +
        'width: 50px; height: 50px; color: #fff; background: #ED614F; text-align: center;' +
        'cursor: pointer; font-weight: bold; border-radius: 100%; z-index: 999999;' +
        'box-shadow: 0 2px 5px grey;';
        topBtn.onclick = function () {
          window.scrollTo(0, 0);
        }
        document.body.appendChild(topBtn);
      }
      // if Bing and Google are not added yet, add them.

      var isNotBaiduHomepage =
      window.location.href.toUpperCase() !== 'HTTP://WWW.BAIDU.COM' &&
      window.location.href.toUpperCase() !== 'HTTPS://WWW.BAIDU.COM' &&
      window.location.href.toUpperCase() !== 'HTTP://WWW.BAIDU.COM/' &&
      window.location.href.toUpperCase() !== 'HTTPS://WWW.BAIDU.COM/';
      if (!hasAdded && isNotBaiduHomepage) {
        // find container and Baidu button.
        var container = document.querySelector('#form');
        var baidu = document.querySelector('#su').parentElement;
        var current = baidu;
        // now, create and add new buttons.
        for (var item in URLS) {
          var anchor = document.createElement('a');
          anchor.textContent = item;
          anchor.setAttribute('data-url', URLS[item]);
          anchor.setAttribute('target', '_blank');
          anchor.onmouseenter = function () {
            var q = document.querySelector('#kw').value || '';
            this.setAttribute('href', this.getAttribute('data-url') + q);
          };
          anchor.style = 'cursor: pointer; color: rgb(255, 255, 255);font-weight: bold; display: inline-block;' +
          'text-decoration: none;background: rgb(51, 133, 255) none repeat scroll 0% 0%; text-align: center; line-height: 33px;' +
          'margin-left: 2px; width: 60px; height: 33px; border-bottom: 1px solid transparent;';
          container.insertBefore(anchor, current.nextSibling);
          current = anchor;
        }
        hasAdded = true;
      }
      var resultContainer = document.querySelector(resultContainerQuery);
      if (resultContainer && resultContainer.textContent !== buffer) {
        // update buffer.
        buffer = resultContainer.textContent;
        // first, find all 'em's.
        var ems = document.querySelectorAll('em');
        // if there is no 'em's, do nothing.
        if (ems.length === 0) {
          return false;
        }
        // convert ems into an array.

        ems = Array.prototype.slice.apply(ems);
        var counter = 0;
        var styles = {
        };
        // iterate through all the keywords in search result, 
        // and map the predefined color to them.
        ems.forEach(function (em) {
          var text = em.innerHTML.toUpperCase().trim();
          var bg = styles[text];
          if (!bg) {
            bg = COLORS[counter++];
            styles[text] = bg;
            if (counter === COLORS.length) {
              counter = 0;
            }
          }
          em.style.background = bg;
          em.style.color = '#000';
          em.style.fontWeight = 'bold';
        });
      }
    }, 200);
  }
}) (this, document);