My god, what a hideous website.
I think what you need for this is JS's window.setInterval() function. A basic version:
Code:
var images = ['img1.gif','img2.gif','img3.gif','img4.gif'];
var counter = 0;
window.setInterval(function() {
counter++;
if (counter == 4) counter = 0;
document.getElementById('banner').setAttribute('src',images[counter]);
}, 2000);
It assumes there's an image the the id 'banner' and it'll change the src attribute every 2 seconds. If you want the links at the bottom too, that can easily be incorporated.
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