var images = new Array();

images[0] = 'tti-photo-main.jpg';
images[1] = 'tti-photo-main2.jpg';
images[2] = 'tti-photo-main3.jpg';



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=777 height=458>');