if (document.images) {
// ROOT NAVIGATION
  image1 = new Image;
  image2 = new Image;
  image1.src = 'assets\/images\/nav_arrow.jpg';
  image2.src = 'assets\/images\/nav_arrow_down.jpg';
 
// PAGE NAVIGATION
  image1s = new Image;
  image2s = new Image;
  image1s.src = '..\/assets\/images\/nav_arrow.jpg';
  image2s.src = '..\/assets\/images\/nav_arrow_down.jpg';

} else {
  image1 = '';
  image2 = '';
  document.rollimg = '';
  document.rollimg2 = '';
}