var banner = new Array();

banner[0]='http://img219.imageshack.us/img219/6139/motorsportracingteamfi2.jpg';
banner[1]='https://i.servimg.com/u/f61/13/41/43/38/logo_d10.jpg';
banner[2]='https://i.servimg.com/u/f41/13/41/43/38/portad10.jpg';
banner[3]='https://i.servimg.com/u/f41/13/41/43/38/portad11.jpg';
banner[4]='https://i.servimg.com/u/f41/13/41/43/38/portad12.jpg';
banner[5]='https://i.servimg.com/u/f41/13/41/43/38/portad13.jpg';
banner[6]='https://i.servimg.com/u/f41/13/41/43/38/portad14.jpg';
banner[7]='https://i.servimg.com/u/f41/13/41/43/38/portad15.jpg';
banner[8]='https://i.servimg.com/u/f41/13/41/43/38/portad16.jpg';
banner[9]='https://i.servimg.com/u/f41/13/41/43/38/portad17.jpg';

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);