/*
 * Copyright 2011-2014 University of Illinois
 * Authors: Thomas Foltz and Jon Gunderson
 *
 * Licensed 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.
 */

/* exported showLandmarks, showHeadings */
/* globals initLandmarks, initHeadings */

'use strict';

function showLandmarks(event) {
  if (typeof window[initLandmarks] !== 'function') {
    window[initLandmarks] = initLandmarks();
  }

  if (window[initLandmarks].run()) {
    event.target.innerHTML = 'Hide Landmarks';
  } else {
    event.target.innerHTML = 'Show Landmarks';
  }
}

function showHeadings(event) {
  if (typeof window[initHeadings] !== 'function') {
    window[initHeadings] = initHeadings();
  }

  if (window[initHeadings].run()) {
    event.target.innerHTML = 'Hide Headings';
  } else {
    event.target.innerHTML = 'Show Headings';
  }
}