var banner = new Array();

banner[0]='https://i275.photobucket.com/albums/jj313/nebedy/FanficAddiction/brujabanner.png';
banner[1]='https://i275.photobucket.com/albums/jj313/nebedy/FanficAddiction/HP.png';
banner[2]='https://i275.photobucket.com/albums/jj313/nebedy/FanficAddiction/vampire.png';
banner[3]='https://i275.photobucket.com/albums/jj313/nebedy/FanficAddiction/naruto.png';

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

setInterval("document.getElementById('i_logo').src= banner[Math.floor(Math.random()*banner.length)];",12000);