// JavaScript Document

var theImages = new Array() // do not change this

theImages[0] = 'http://www.princerupert.de/images/headerimg/banner1.jpg'
theImages[1] = 'http://www.princerupert.de/images/headerimg/banner2.jpg'
theImages[2] = 'http://www.princerupert.de/images/headerimg/banner3.jpg'
theImages[3] = 'http://www.princerupert.de/images/headerimg/banner4.jpg'
theImages[4] = 'http://www.princerupert.de/images/headerimg/banner5.jpg'
theImages[5] = 'http://www.princerupert.de/images/headerimg/banner6.jpg'
theImages[6] = 'http://www.princerupert.de/images/headerimg/banner7.jpg'
theImages[7] = 'http://www.princerupert.de/images/headerimg/banner8.jpg'
theImages[8] = 'http://www.princerupert.de/images/headerimg/banner9.jpg'
theImages[9] = 'http://www.princerupert.de/images/headerimg/banner10.jpg'
theImages[10] = 'http://www.princerupert.de/images/headerimg/banner11.jpg'
theImages[11] = 'http://www.princerupert.de/images/headerimg/banner12.jpg'
theImages[12] = 'http://www.princerupert.de/images/headerimg/banner13.jpg'
theImages[13] = 'http://www.princerupert.de/images/headerimg/banner14.jpg'
theImages[14] = 'http://www.princerupert.de/images/headerimg/banner15.jpg'
theImages[15] = 'http://www.princerupert.de/images/headerimg/banner16.jpg'
theImages[16] = 'http://www.princerupert.de/images/headerimg/banner17.jpg'
theImages[17] = 'http://www.princerupert.de/images/headerimg/banner18.jpg'
theImages[18] = 'http://www.princerupert.de/images/headerimg/banner19.jpg'
theImages[19] = 'http://www.princerupert.de/images/headerimg/banner20.jpg'

// ======================================
// do not change anything below
// ======================================

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="'+theImages[whichImage]+'" alt="Prince Rupert School">');
}