// Enable HTML 5 elements in IE
if (!document.createElementNS) {
  document.createElement('article');
  document.createElement('aside');
  document.createElement('details');
  document.createElement('figcaption');
  document.createElement('figure');
  document.createElement('footer');
  document.createElement('header');
  document.createElement('hgroup');
  document.createElement('nav');
  document.createElement('section');
  document.createElement('time');
}