var banner = new Array();

banner[0]='https://i661.photobucket.com/albums/uu337/androck12/default-1.jpg';
banner[1]='https://i661.photobucket.com/albums/uu337/androck12/AngelAndDemon-3.jpg';
banner[2]='https://i661.photobucket.com/albums/uu337/androck12/Dibujoxxxxxcxa.jpg';

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)];",8000);