function getCover()
{
  'use strict';

  let videoUrl = document.getElementById('videoUrl').value;
  let imageDiv = document.getElementById('ytImage');
  imageDiv.innerHTML = '';

  let videoCover = document.createElement('img');
  let imageLink = document.createElement('a');

  videoCover.src = 'https://img.youtube.com/vi/' + YouTubeGetID(videoUrl) + '/maxresdefault.jpg';
  imageLink.href = videoCover.src;
  imageLink.download = 'cover';
  videoCover.onload = function() {
    imageLink.title = videoCover.width + 'x' + videoCover.height;
  }

  imageLink.appendChild(videoCover);
  imageDiv.appendChild(imageLink);
}