if (document.images) {
  image0 = new Image;
  image1 = new Image;
  image2 = new Image;
  image3 = new Image;
  image0.src = '../images/apartments/gc/1.jpg';
  image1.src = '../images/apartments/gc/2.jpg';
  image2.src = '../images/apartments/gc/3.jpg';
  image3.src = '../images/apartments/gc/4.jpg';
} else {
  image0 = '';
  image1 = '';
  image2 = '';
  image3 = '';
  document.rollimg = '';
}