検索イベントをGoogleアナリティクスへ送るトラッキングコードについて

{% if site.google_custom_search == 'twolines' %}
<div id='cse-search-form' style='width: 100%;'>Loading</div>
<script src='//www.google.com/jsapi' type='text/javascript'></script>
<script type='text/javascript'>
google.load('search', '1', {language: '{% if site.google_search_lang %}{{site.google_search_lang}}{% else %}en{% endif %}', style: google.loader.themes.MINIMALIST});
google.setOnLoadCallback(function() {
  var customSearchOptions = {};
  var customSearchControl =   new google.search.CustomSearchControl('partner-pub-{{site.google_search_pub}}', customSearchOptions);
  customSearchControl.setResultSetSize(google.search.Search.FILTERED_CSE_RESULTSET);
  var options = new google.search.DrawOptions();
  options.enableSearchboxOnly('{{site.google_result_page}}', '{% if site.google_search_query %}{{site.google_search_query}}{% else %}q{% endif %}');
  options.setAutoComplete(true);
  customSearchControl.draw('cse-search-form', options);
  $(".gsc-search-button .gsc-search-button").val(eval("'\\uf00e'"));
}, true);
</script>
{% endif %}

---
layout: default
footer: false

---

<div>
<article>
{% if site.google_custom_search == 'twopages' %}
  <div id='cse' style='width: 100%;'>Loading</div>
  <script src='//www.google.com/jsapi' type='text/javascript'></script>
  <script type='text/javascript'>
  google.load('search', '1', {language: '{{site.google_search_lang}}', style: google.loader.themes.MINIMALIST});
  google.setOnLoadCallback(function() {
    var customSearchOptions = {};
    var customSearchControl =   new google.search.CustomSearchControl('partner-pub-{{site.google_search_pub}}', customSearchOptions);
    customSearchControl.setResultSetSize(google.search.Search.FILTERED_CSE_RESULTSET);
    var options = new google.search.DrawOptions();
    options.enableSearchResultsOnly();
    customSearchControl.draw('cse', options);
    function parseParamsFromUrl() {
      var params = {};
      var parts = window.location.search.substr(1).split('&');
      for (var i = 0; i < parts.length; i++) {
        var keyValuePair = parts[i].split('=');
        var key = decodeURIComponent(keyValuePair[0]);
        params[key] = keyValuePair[1] ?
            decodeURIComponent(keyValuePair[1].replace(/\+/g, ' ')) :
            keyValuePair[1];
      }
      return params;
    }
    var urlParams = parseParamsFromUrl();
    var queryParamName = '{% if site.google_search_query %}{{site.google_search_query}}{% else %}q{% endif %}';
    if (urlParams[queryParamName]) {
      customSearchControl.execute(urlParams[queryParamName]);
    }
  }, true);
  </script>
{% endif %}
</article>
</div>
<aside class="sidebar">
  {% if site.blog_index_asides.size %}
  {% include_array blog_index_asides %}
  {% else %}
  {% include_array default_asides %}
  {% endif %}
</aside>

google_custom_search: twopages
google_result_page: /search.html
google_search_query: s
google_search_pub: XXXXXXXXXXXXXXXX:XXXXXXXXXX
google_search_lang: ja