Код:
<script>
function newWin(){
var NW=window.open("about:blank", "window", "toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=1", true)
document.frm.submit();
}
</script>
<form name="frm" target="window" method="post" onSubmit="newWin(); return false">