function updateImage()
{
  var d = document.getElementById("image_popup");
  positionPopup(d);

}
function popImage(imageID, gID)
{
  showPopup("image_popup",false,false,false,true, false);
  var screen = getWindowSize();

  var d = document.getElementById("image_popup");
  d.innerHTML=loader;

  positionPopup(d);

  var ret = ajaxSync("?ajax=1&imageHref="+imageID+"&gID="+gID+"&width="+screen[0]+"&height="+screen[1]);
  d.style.visibility="hidden";
  d.innerHTML=ret;

}