N = new Number();
N = 24;

function set_pics()
{
   for (i=1;i<=N;i++)
      set_pic(i);
}

function set_pic(i)
{
   num = Math.min(Math.floor(Math.random()*(N-i+1)), N-i);
   document.getElementById("id_pic_"+i).setAttribute("src", img_arr[num]);
   if (i<N)
   {
      img_arr2 = new Array(N-i);
      k = 0;
      for (j = 0; j < N-i+1; j++)
         if (j != num)
         {
            img_arr2[k] = img_arr[j];
            k = k+1;
         }
      img_arr = img_arr2;
   }
}
img_arr = new Array(N);
img_arr[0] = "img/01s.jpg";
img_arr[1] = "img/02s.jpg";
img_arr[2] = "img/03s.jpg";
img_arr[3] = "img/04s.jpg";
img_arr[4] = "img/05s.jpg";
img_arr[5] = "img/06s.jpg";
img_arr[6] = "img/07s.jpg";
img_arr[7] = "img/08s.jpg";
img_arr[8] = "img/09s.jpg";
img_arr[9] = "img/10s.jpg";
img_arr[10] = "img/11s.jpg";
img_arr[11] = "img/12s.jpg";
img_arr[12] = "img/strings.jpg";
img_arr[13] = "img/strings1.jpg";
img_arr[14] = "img/strings2.jpg";
img_arr[15] = "img/strings3.jpg";
img_arr[16] = "img/strings4.jpg";
img_arr[17] = "img/strings5.jpg";
img_arr[18] = "img/strings6.jpg";
img_arr[19] = "img/strings7.jpg";
img_arr[20] = "img/a1.jpg";
img_arr[21] = "img/09_2s.jpg";
img_arr[22] = "img/02_2s.jpg";
img_arr[23] = "img/01_2s.jpg";