Thank you, but how about this?
thank you for your suggestion, but this is not what the customer wants - he wants the client stay on the order page as long as possible. So, a quick and dirty workaround is, to add a named anchor:
<a name="poswine<?php echo $row_WADAwein["weinID"]; ?>"></a>
and the form action is expanded with a page link:
action="<?php echo $_SERVER["PHP_SELF"]; ?>#poswine<?php echo $row_WADAwein["weinID"]; ?>
So, after adding a product, the form action leads to the spot where the named anchor sits. I know its not terribly elegant but at least the client finds the last ordered item on top of the page. This is helpful if we have a very long list of products.
I hope this helps all those who have the same problem.