function photoChange(imgElementId,url)
{
  imgElement=document.getElementById(imgElementId);
  while(tmp_throbbler=document.getElementById("throbbler"))
    tmp_throbbler.parentNode.removeChild(tmp_throbbler);
  throbbler=document.createElement("img");
  throbbler.setAttribute("id","throbbler");
  throbbler.src="/img/throbbler.gif";
  throbbler.style.cssText="position:absolute; bottom: 10px; right: 10px; background-color: transparent; border: 0px; opacity:0.9;";
  imgElement.parentNode.appendChild(throbbler);
  imgElement.onload=function(){ document.getElementById("throbbler").parentNode.removeChild(document.getElementById("throbbler")); };
  imgElement.src=url;
}