var banner = new Array();

banner[0]='https://i1236.photobucket.com/albums/ff442/hinatan1/dsvwerf.png';
banner[1]='https://i1236.photobucket.com/albums/ff442/hinatan1/Sinttulo-2-3.png';
banner[2]='https://i1236.photobucket.com/albums/ff442/hinatan1/10-3.png';
banner[3]='https://i1236.photobucket.com/albums/ff442/hinatan1/32f32f.png';
banner[4]='https://i1236.photobucket.com/albums/ff442/hinatan1/fght.png';
banner[5]='https://i1236.photobucket.com/albums/ff442/hinatan1/rgrge.png';
banner[6]='https://i1236.photobucket.com/albums/ff442/hinatan1/fgrgr.png';
banner[7]='https://i1236.photobucket.com/albums/ff442/hinatan1/efeeff.png';

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