http://qs1969.pair.com?node_id=166696


in reply to CGI and locking

You can do this reasonably reliably client-side with Javascript too...

I've written the below from memory, I have used something similar in the past for exactly this situation...

<script language="javascript"> var submitCount = 0; function doSubmit() { if (submitCount == 0) { submitCount++; document.form1.submit(); } else { alert("Please wait, lengthy query executing..."); } } </script> ... <form name=...> ... <input type="button" onClick="doSubmit();"> </form> ...
Update: andye beat me to it! This approach will only work if your clients have Javascript enabled.