var img1;
var img2;
var imgsS = new Array;

function rorateMainPhotos(){
  if(img1 == null){
    img1 = document.getElementById('ph1');
    img2 = document.getElementById('ph2');
  }
  i = Math.round(Math.random() * (imgs.length - 1));
  im = imgs[i];
  imgs.splice(i,1);

  img1.src = imgPath+im+".jpg";
  if(imgs.length == 0){
    for(var n=0;n<imgsS.length;n++){
      imgs[n] = imgsS[n];
    }
}
}

setInterval("rorateMainPhotos();",10000);