simple question about refresh things

[kav]

here it goes.
I have this file name file.php.
In it has a list box where if user choose an item,then it will be submit to itself. Onchage()
Below it will be using
if(isset($_POST['xxx'])).
--the code here--

when i am working on another open window using window.open click from the file.php, there a times when i need to use this button onClick="opener.location.reload(); self.close()

But whenever that button is click it will reload the file.php. But when it is being reload, a message pop up saying "The page cannot be refreshed without resending the information bla bla"
Its very annoying. How do i avoid that kind of message?

[Weedpacket]

If I recall rightly from when I searched here on this topic, I think the solution posited was to send a certain header;

header("Cache-control: private");

[phpprogrammer]

Dear Friend,

use this step

onClick="javascript:myfunction()">

<script language=javascript>

function myfunction()
{
opener.location.href='file.php';
self.close() ;
}
</script>

regards
bvsureshbabu

[kav]

weedpacket: Where should i put that? in the file.php or the other open window?

phpprogrammer: Can explain what is the differents between calling the function instead of just putting it along with the button.

Thanks to both of u. I will try both.