var banner = new Array();
 
banner.push('https://zupimages.net/up/19/44/sjr8.png');
banner.push('https://zupimages.net/up/19/44/bhgy.png');
banner.push('adresse_image_3');
 
  document.getElementById('i_logo').src= banner[Math.floor(Math.random()*banner.length)];