var banner = new Array();

banner.push('http://dl.dropbox.com/u/29533352/HeaderAryas.png');
banner.push('http://dl.dropbox.com/u/29533352/HeaderAsclepiades.png');
banner.push('http://dl.dropbox.com/u/29533352/HeaderEveilles.png');
banner.push('http://dl.dropbox.com/u/29533352/HeaderCDV.png');
banner.push('http://dl.dropbox.com/u/29533352/HeaderAmydiens.png');
banner.push('http://dl.dropbox.com/u/29533352/HeaderAsmodeens.png');

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