Just one more note on this....
JSmol uses a hidden form on a page to submit just this sort of thing (a
file download using "attachment") as well. I had forgotten that. While the
browser does temporarily display a blank page, that page does not persist
after the file is sent.
>From jsmol.php:
...
ob_start();
if ($imagedata != "") {
$output = $imagedata;
header('Content-Type: '.$contentType);
if ($filename != "") {
header('Content-Description: File Transfer');
header("Content-Disposition: attachment; filename=\"$filename\"");
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
}
...
header('Last-Modified: '.date('r'));
header('Accept-Ranges: bytes');
header('Content-Length: '.strlen($output));
print($output);
ob_end_flush();
--
Robert M. Hanson
Larson-Anderson Professor of Chemistry
Chair, Chemistry Department
St. Olaf College
Northfield, MN
http://www.stolaf.edu/people/hansonr
If nature does not answer first what we want,
it is better to take what answer we get.
-- Josiah Willard Gibbs, Lecture XXX, Monday, February 5, 1900
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