var banner = new Array();

banner[0]='https://i1077.photobucket.com/albums/w461/MythraL3/shadesb_zps8738f077-1_zps4b01ae30.jpg';
banner[1]='https://i1077.photobucket.com/albums/w461/MythraL3/shadesb2_zps59b3c871-1_zpsf70c67b5.jpg';
banner[2]='https://i1077.photobucket.com/albums/w461/MythraL3/shadeb3_zps2ab99776-1_zps87d2d11e.jpg';
banner[3]='https://i1077.photobucket.com/albums/w461/MythraL3/50SOMBRASSOBREGREY_zps7166dc55-1_zps00ad6c9e.jpg';
banner[4]='https://i1077.photobucket.com/albums/w461/MythraL3/triangle2_zpsa39a5214-1_zps1c19531d.jpg';
document.getElementById('logo').firstChild.src= banner[Math.floor(Math.random()*banner.length)];