var banner = new Array();

banner.push('[URL=http://imageshack.us/photo/my-images/88/mirecourt01photoshenri0.jpg/][IMG=http://img88.imageshack.us/img88/8559/mirecourt01photoshenri0.jpg][/IMG][/URL]

Uploaded with [URL=http://imageshack.us]ImageShack.us[/URL]');
banner.push('adresse_image_2');
banner.push('adresse_image_3');

document.getElementById('logo').firstChild.src= banner[Math.floor(Math.random()*banner.length)];

setInterval("document.getElementById('logo').firstChild.src= banner[Math.floor(Math.random()*banner.length)];",3000);