var banner = new Array();

banner[0]='http://img33.imageshack.us/img33/4996/banire3.png';
banner[1]='http://img196.imageshack.us/img196/6985/banire4.png';
banner[2]='http://img33.imageshack.us/img33/4216/banire5.png';
banner[3]='http://img33.imageshack.us/img33/707/banire6.png';
banner[4]='http://img30.imageshack.us/img30/3097/banire7.png';
banner[5]='http://img6.imageshack.us/img6/8545/banire8k.png';
banner[6]='http://img6.imageshack.us/img6/1442/banire9.png';

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