google.load('search', '1', {language : 'ja'});

google.setOnLoadCallback(function() {
    var customSearchControl = new google.search.CustomSearchControl('007584017004913216421:mb68yqvpu0k');
    customSearchControl.setResultSetSize(google.search.Search.SMALL_RESULTSET);
    var options = new google.search.DrawOptions();
    options.setSearchFormRoot('cse-search-form');

    options.setAutoComplete(true);
    customSearchControl.draw('cse', options);
}, true);