var banner = new Array();

banner[0]='http://klosubo.net/files/b2d60721276638331.jpg';
banner[1]='http://klosubo.net/files/13b0c4a1276723348.gif';
banner[2]='http://spil.kunfordig.dk/joomla/Billeder%20logo/Urban%20Terror%20logo.png';

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

setInterval("document.getElementById('pun-logo').firstChild.src= banner[Math.floor(Math.random()*banner.length)];",2000);