var popup = null;
function popupWindow(filename) {
	var w = screen.width;
	var h = screen.height;
	leftPosition = (w - 665) / 2;
	topPosition = (h - 580) / 2;
	var windowprops = 'width=' + 665 + ',height=' + 580 + ',top='+ topPosition +',left='+ leftPosition +',toolbar=no,location=no,directories=no,status=no,scrollbars=no,menubar=no';
	popup = window.open(filename,'remote',windowprops);
	popup.focus();
}