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;
  image13 = new Image;
  image14 = new Image;
  image15 = new Image;
  image16 = new Image;
  image17 = new Image;
  image18 = new Image;
  image19 = new Image;
  image20 = new Image;
  image21 = new Image;  
  image22 = new Image;
  image23 = new Image;
  image0.src = 'images\/pic1a.jpg';
  image1.src = 'images\/pic2a.jpg';
  image2.src = 'images\/pic3a.jpg';
  image3.src = 'images\/pic4a.jpg';
  image4.src = 'images\/pic5a.jpg';
  image5.src = 'images\/pic6a.jpg';
  image6.src = 'images\/pic7a.jpg';
  image7.src = 'images\/pic8a.jpg';
  image8.src = 'images\/pic9a.jpg';
  image9.src = 'images\/pic10a.jpg';
  image10.src = 'images\/pic11a.jpg';
  image11.src = 'images\/pic12a.jpg';
  image12.src = 'images\/pic13a.jpg';
  image13.src = 'images\/pic14a.jpg';
  image14.src = 'images\/pic15a.jpg';
  image15.src = 'images\/pic16a.jpg';
  image16.src = 'images\/pic17a.jpg';
  image17.src = 'images\/pic18a.jpg';
  image18.src = 'images\/pic19a.jpg';
  image19.src = 'images\/pic20a.jpg';
  image20.src = 'images\/pic21a.jpg';
  image21.src = 'images\/pic22a.jpg';
  image22.src = 'images\/pic23a.jpg';
  image23.src = 'images\/pic24a.jpg';
} else {
  image0 = '';
  image1 = '';
  image2 = '';
  image3 = '';
  image4 = '';
  image5 = '';
  image6 = '';
  image7 = '';
  image8 = '';
  image9 = '';
  image10 = '';
  image11 = '';
  image12 = '';
  image13 = '';
  image14 = '';
  image15 = '';
  image16 = '';
  image17 = '';
  image18 = '';
  image19 = '';
  image20 = '';
  image21 = '';
  image22 = '';
  image23 = '';
  document.rollimg = '';
}
var cap = ['Picture One',
           'Second Picture',
           'Three'];

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