var banner = new Array();

banner[0]='https://i.servimg.com/u/f10/12/10/38/49/logo_a10.jpg';
banner[1]='https://i.servimg.com/u/f60/12/10/38/49/bannie15.jpg';
banner[2]='https://i.servimg.com/u/f60/12/10/38/49/bannie16.jpg';
banner[3]='https://i.servimg.com/u/f10/12/10/38/49/logo_410.jpg';
banner[4]='https://i.servimg.com/u/f60/12/10/38/49/bannie17.jpg';
banner[5]='https://i.servimg.com/u/f60/12/10/38/49/bannie18.jpg';
banner[6]='https://i.servimg.com/u/f60/12/10/38/49/bannie19.jpg';
banner[7]='https://i.servimg.com/u/f60/12/10/38/49/bannie20.jpg';
document.getElementById('i_logo').src= banner[Math.floor(Math.random()*banner.length)];