window.onload= defilImg
current_img = 0;
arrImg = ['images/meaux.jpg','images/marseille.jpg']
 
 
function defilImg(){
  if(current_img == arrImg.length)
  current_img = 0;
  document.getElementById('toto').src = arrImg[current_img++];
  window.setTimeout('defilImg()',15000);
}