How to prevent re-post caused by pressing browser refresh in ASP classic

[LuxeMed]

I am new in ASP. I have a submit.asp page => thankyou.asp page. when pressing browser refresh, it reload and re-send a new data submissions. It caused me getting a lot of multiple submission.I'm trying to add this in, its work , but little problem still when pressing the leaving button , thankyou.asp page refresh and loading a fresh new entry. \[code\] <script type="text/javascript"> window.onbeforeunload = function() { return "You are leaving now! See you again !"; } </script>\[/code\]I'm asking for help on how to redirect to another page when browser refresh.Thanks!Michael