[рони]

macik,

var mas = [
      '/images/new/foto_index/01.jpg',
      '/images/new/foto_index/IMG_0875.jpg',
      '/images/new/foto_index/IMG_1043.jpg',
      '/images/new/foto_index/IMG_1109.jpg',
      '/images/new/foto_index/IMG_1077.jpg',
      '/images/new/foto_index/IMG_0985.jpg'
    ], i=1;
function csaHead(){
  if(i > (mas.length-1)){
    i=0;
 	}
 	document.getElementById('foto_index').style.backgroundImage="url('"+mas[i]+"')";
 	i++;
  setTimeout(csaHead,5000)
}
csaHead()