var banner = new Array();

banner[0]='https://i856.photobucket.com/albums/ab126/dino_cava/Hitoman/Banner/banner1.jpg';
banner[1]='https://i856.photobucket.com/albums/ab126/dino_cava/Hitoman/Banner/banner2.jpg';



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