function show( strImage ){
  document.getElementById("divOverlayDarken").style.display="block";
  document.getElementById("divOverlayPhoto").style.display="block";
  document.getElementById("imgPhoto").src=strImage;
}

function hide(){
  document.getElementById("divOverlayDarken").style.display="none";
  document.getElementById("divOverlayPhoto").style.display="none";
  document.getElementById("imgPhoto").src="Images/load.gif";
}