window.onload = function() {
  var img = {};
  for(var i=1; i<=6; i+=1) {
    img["panorama"+i] = document.getElementById("panorama"+i);
    img["panorama"+i].style.cursor = "pointer";
    img["panorama"+i].onclick = openPanorama;
  }
}

function openPanorama() {
  var newsrc=this.src.replace(/thumb/,"pano");
  window.open("/panorama.php?src="+newsrc, "Panorama","toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=750,height=470,screenX=100,screenY=100");
}