// Set up the image files to be used.
var theImages = new Array() 
// To add more image files, continue with the
// pattern below, adding to the array.


theImages[0] = 'cataslides1.jpg'
theImages[1] = 'cataslides2.jpg'
theImages[2] = 'cataslides3.jpg'
theImages[3] = 'cataslides4.jpg'
theImages[4] = 'cataslides5.jpg'


var j = 0
var p = theImages.length;
var preBuffer = new Array()
for (i = 0; i < p; i++){
   preBuffer[i] = new Image()
   preBuffer[i].src = theImages[i]
}
var whichImage = Math.round(Math.random()*(p-1));
function showImage(){
document.write('<img src="gfx/rand/'+theImages[whichImage]+'">');
}