var banner = new Array();

banner[0]='http://imageshack.us/m/52/7210/thesims3.png';
banner[1]='http://imageshack.us/m/842/9030/killzonen.png';
banner[2]='http://imageshack.us/m/860/5985/dirt3.png';
banner[3]='http://imageshack.us/m/837/7645/superstreetetetet.png';
banner[4]='http://imageshack.us/m/109/5342/deadisland.png';
banner[5]='http://imageshack.us/m/62/6295/destruiusobremerda.png';
banner[6]='http://imageshack.us/m/687/549/fearnovo.png';
banner[7]='http://imageshack.us/m/827/2748/letraakuma.png';
banner[8]='http://imageshack.us/m/546/5685/sobrenatural.png';
banner[9]='http://imageshack.us/m/11/9461/prisonbreakomelhor.png';
banner[10]='http://imageshack.us/m/690/2946/quebota.png';

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