iichan_search.user.js

// ==UserScript==
// @name iichan.hk search
// @description iichan.hk search
// @author :^)
// @version 0.1
// @include http://iichan.hk/*
// ==/UserScript==
(function() {
  'use strict';

  var searchbox = document.createElement('gcse:searchbox'),
      searchresults = document.createElement('gcse:searchresults'),
      searchlink = document.createElement('a'),
      searchbar = document.createElement('div'),
      resultsContainer = document.createElement('div'),
      adminbar = document.getElementsByClassName('adminbar')[0],
      logo = document.getElementsByClassName('logo')[0],
      boardname = document.location.pathname.split('/')[1];

  if (!(adminbar || logo)) return;

  searchlink.href = '#';
  searchlink.textContent = 'Поиск';
  searchlink.id = 'search-link';
  adminbar.innerHTML += ' [' + searchlink.outerHTML + ']';

  searchbar.id = 'search-bar';
  searchbar.appendChild(searchbox);
  searchbar.style.display = 'none';
  searchbar.style.width = '300px';
  searchbar.style.margin = '5px';
  searchbar.style.cssFloat = 'right';
  adminbar.innerHTML += '<br>';
  adminbar.appendChild(searchbar);

  resultsContainer.style.display = 'none';
  resultsContainer.id = 'results-container';
  resultsContainer.appendChild(searchresults);
  document.body.insertBefore(resultsContainer, logo);

  searchbox.setAttribute('defaultToRefinement', boardname);

  document.getElementById('search-link')
    .addEventListener('click', function(e) {
      e.preventDefault();

      var searchbar = document.getElementById('search-bar');
      if (searchbar.style.display=='none')
        searchbar.style.display = 'block';
      else
        searchbar.style.display = 'none';

      var resultsContainer = document.getElementById('results-container');
      if (resultsContainer.style.display=='none')
        resultsContainer.style.display = 'block';
      else
        resultsContainer.style.display = 'none';
    });

    var cx = '016509237818063101895:p522qbpqjui';
    var gcse = document.createElement('script');
    gcse.type = 'text/javascript';
    gcse.async = true;
    gcse.src = (document.location.protocol == 'https:' ? 'https:' : 'http:') +
        '//www.google.com/cse/cse.js?cx=' + cx;
    var s = document.getElementsByTagName('script')[0];
    s.parentNode.insertBefore(gcse, s);
})();