disable refresh or F5

does anyone know a javascript that would disable the refresh or F5?

i'm making something like a test and i don't want the members to be able to refresh the page to play again..

i tried several scripts.. but most of them didn't work.. only one did but it disabled all the keyboard functions like arrow down.. T.T

please help...

there is script can disable F5, but unfortunetely its only working on IE, Here script for it.

Code:

<script language="javascript">
function document.onkeydown()
{
if ( event.keyCode==116)
{
event.keyCode = 0;
event.cancelBubble = true;
return false;
}
}
</script>

Other browser such firefox or opera its still can refreshed using F5, the problem is you cant change the operating system functionality from within any browser except IE.

ouch!

anyways.. thanks..^^