// JavaScript Document

var theImages = new Array()

theImages[1] = 'images/layout/banner_b.png'
theImages[2] = 'images/layout/banner_c.png'
theImages[3] = 'images/layout/banner_d.png'
theImages[0] = 'images/layout/banner_e.png'

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]+'" />');
}