var banner = new Array();

banner[0]='http://photomaniak.com/upload/out.php/i776666_ban900cielbleub.jpg';
banner[1]='http://photomaniak.com/upload/out.php/i777573_hdpkrys2.jpg';
banner[2]='http://photomaniak.com/upload/out.php/i777648_hdpcalo.jpg';
banner[3]='http://photomaniak.com/upload/out.php/i777647_hdpondul.jpg';
banner[4]='http://photomaniak.com/upload/out.php/i897625_banmanda.jpg';

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