var banner = new Array();

banner[0]='http://img707.imageshack.us/img707/5416/bannerrufio2final.png';
banner[1]='http://img137.imageshack.us/img137/1956/bannermora.png';
banner[2]='http://img228.imageshack.us/img228/4227/bannerdanita.png';
banner[3]='http://img230.imageshack.us/img230/9048/banneryogurth.png';
banner[4]='http://img169.imageshack.us/img169/4378/bannereko.png';
banner[5]='http://img4.imageshack.us/img4/9030/bannerholly.png';
banner[6]='http://img403.imageshack.us/img403/677/bannerbrandy.png';
banner[7]='http://img686.imageshack.us/img686/7545/bannerjuya2.png';
banner[8]='http://img151.imageshack.us/img151/1012/bannermokito.png';
banner[9]='http://img827.imageshack.us/img827/8720/bannerpepe.png';

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