Source Viewer : /general/page-head-demo.js

// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

$(document).ready(function() {

  // Register a click listener on the link that will toggle field-div visibility
  $('$linkId').click(function() {

    // Toggle the field-div to slide up or down
    $('#container').slideToggle("fast");

    // Change the link text each time its clicked
    $(this).text($(this).text() == 'Show' ? 'Hide' : 'Show');

    // Return false which overrides the default link click action
    return false;
  });
});