var theImages = new Array();
theImages[0] = '/tasks/sites/cok/assets/Image/banners/banner_a.jpg'
theImages[1] = '/tasks/sites/cok/assets/Image/banners/banner_b.jpg'
theImages[2] = '/tasks/sites/cok/assets/Image/banners/banner_c.jpg'
theImages[3] = '/tasks/sites/cok/assets/Image/banners/banner_d.jpg'
theImages[4] = '/tasks/sites/cok/assets/Image/banners/banner_e.jpg'
theImages[5] = '/tasks/sites/cok/assets/Image/banners/banner_f.jpg'
theImages[6] = '/tasks/sites/cok/assets/Image/banners/banner_g.jpg'
theImages[7] = '/tasks/sites/cok/assets/Image/banners/banner_h.jpg'
theImages[8] = '/tasks/sites/cok/assets/Image/banners/banner_i.jpg'
theImages[9] = '/tasks/sites/cok/assets/Image/banners/banner_j.jpg'
theImages[10] = '/tasks/sites/cok/assets/Image/banners/banner_k.jpg'
theImages[11] = '/tasks/sites/cok/assets/Image/banners/banner_l.jpg'
theImages[12] = '/tasks/sites/cok/assets/Image/banners/banner_m.jpg'
theImages[13] = '/tasks/sites/cok/assets/Image/banners/banner_n.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="'+theImages[whichImage]+'">');
}