if (document.images) {
  image0 = new Image;
  image1 = new Image;
  image2 = new Image;
  image3 = new Image;
  image4 = new Image;
  image5 = new Image;
  image6 = new Image;
  image7 = new Image;
  image8 = new Image;
  image9 = new Image;
  image10 = new Image;
  image11 = new Image;
  image12 = new Image;
  image0.src = '../images\/co1.jpg';
  image1.src = '../images\/co2.jpg';
  image2.src = '../images\/co3.jpg';
  image3.src = '../images\/co4.jpg';
  image4.src = '../images\/co5.jpg';
  image5.src = '../images\/co6.jpg';
  image6.src = '../images\/co7.jpg';
  image7.src = '../images\/co8.jpg';
  image8.src = '../images\/co9.jpg';
  image9.src = '../images\/co10.jpg';
  image10.src = '../images\/co11.jpg';
  image11.src = '../images\/co12.jpg';
  image12.src = '../images\/co13.jpg';  
} else {
  image0 = '';
  image1 = '';
  image2 = '';
  image3 = '';
  image4 = '';
  image5 = '';
  image6 = '';
  image7 = '';
  image8 = '';
  image9 = '';
  image10 = '';
  image11 = '';
  image12 = '';
  document.rollimg = '';
}