$("#langSearchOption").prop("selectedIndex", 0);
    $("#sortSearchOption").prop("selectedIndex", 0);
    $("#numSearchOption").prop("selectedIndex", 0);
    return false;
  });

  $result.on("mousedown", "a.link", function(e) {
    var docId = $(this).attr("data-id"),
      rt = $("#rt").val(),
      queryId = $("#queryId").val(),
      order = $(this).attr("data-order"),
      url = $(this).attr("href"),