var images = new Array();

images[0] = 'bg_temple.gif';
images[1] = 'bg_hetzel.gif';
images[2] = 'bg_forstner.gif';
images[3] = 'bg_toad.gif';


var count = images.length;

var image_to_show = Math.round(Math.random()*(count-1));

var the_image = images[image_to_show];
document.write('<img src="/images/'+the_image+'" border=0 width=446 height=550>');