var current_image = <?php echo $nahod; ?>;
var max_image = 6;
var disp_interval = 4;
  
function ShowNextImage()
  {
  current_image++;
  if (current_image>max_image) current_image = 1;
    img = document.getElementById('topobr');
    img.src = "/graf/topimage-0"+current_image.toString()+".jpg";
    setTimeout("ShowNextImage()",disp_interval*2000);
  }

setTimeout("ShowNextImage()",disp_interval*2000);