var newWindow

function makePhotoPop(welke,breedte,hoogte) 
   {
   var foto = "fotopopup.php3?foto=" + welke;
   var attr = "WIDTH=" + breedte + ",HEIGHT=" + hoogte + ",resizable,left=20,top=10";

   if ((screen.height <= 600) && (hoogte > breedte))
      {
      attr = "WIDTH=" + breedte + ",HEIGHT=520" + ",scrollbars,resizable,left=20,top=5";
      }	

   
   if (newWindow) 
      {
      newWindow.close("","photopop","");
      }


   newWindow = window.open(foto,"photopop",attr);
   }

function closePhotoPop() 
   {
   if (newWindow) 
      {
      newWindow.close("","photopop","");
      }
   }