JavaScript - Confirm OK Cancel - Yes No

just cam across a post, brilliant way to change the confirm box from ok / cancel to yes / no.

Well it doesn't work in Mozilla though, it returns ok / cancel only

http://www.delphifaq.com/faq/javascript/f1172.shtml

<script language=javascript>

/*@cc_on @*/
/*@if (@_win32 && @_jscript_version>=5)

function window.confirm(str)
{
    execScript('n = msgbox("'+str+'","4132")', "vbscript");
    return(n == 6);
}

@end @*/
var r = confirm("Can you do it?");
alert(r);
</script>