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;
  image0.src = 'images/H-chocolate.jpg';
  image1.src = 'images/H-blue.jpg';
  image2.src = 'images/H-chocolate.jpg';
  image3.src = 'images/H-blue.jpg';
  image4.src = 'images/H-pepper.jpg';
  image5.src = 'images/H-green.jpg';
  image6.src = 'images/P-brown.jpg';
  image7.src = 'images/P-blue.jpg';
  image8.src = 'images/P-gray.jpg';
} else {
  image0 = '';
  image1 = '';
  image2 = '';
  image3 = '';
  image4 = '';
  image5 = '';
  image6 = '';
  image7 = '';
  image8 = '';
  document.rollimg1 = '';
  document.rollimg2 = '';
  document.rollimg3 = '';
}
var cap = ['Picture One',
           'Second Picture',
           'Three'];

function rollover(i,n) {
document['rollimg'+i].src = window['image'+n].src;
document.getElementById('caption'+i).innerHTML = cap[n];
}