if (document.images) {
  image0 = new Image;
  image1 = new Image;
  image2 = new Image;
  image3 = new Image;
  image4 = new Image;
  image5 = new Image;
  image6 = new Image;
  image0.src = 'graphics\/opweg.gif';
  image1.src = 'graphics\/carat.gif';
  image2.src = 'graphics\/deelnemer.gif';
  image3.src = 'graphics\/pub.gif';
  image4.src = 'graphics\/dans01.gif';
  image5.src = 'graphics\/dans02.gif';
  image6.src = 'graphics\/dans03.gif';
} else {
  image0 = '';
  image1 = '';
  image2 = '';
  image3 = '';
  image4 = '';
  image5 = '';
  image6 = '';
  document.rollimg = '';
}