var openDownloadWindow = null;

function doopenDownloadWindow(parameter)
{
  if (openDownloadWindow && !openDownloadWindow.closed)
  {
    openDownloadWindow.close();
  }
  properties = "toolbar=no,location=no,directories=no,status=no,scrollbars=yes,resizable=no,copyhistory=no";
  openDownloadWindow = window.open('download.html'+parameter,'openDownloadWindow','top=0,left=0,width=640,height=480,'+properties,'');
  openDownloadWindow.focus();
}