function popWin(loc, w, h) {
	now = new Date();
	if (!w) w = 730;
	if (!h) h = 630;
	l = screen.availWidth / 2 - w / 2 - 8;
	t = screen.availHeight / 2 - h / 2 - 24;
	newWin = window.open(loc, 'popWin' , 'left=' + l + ',top=' + t + ',width=' + w + ',height=' + h +',toolbar=no,location=no,directoryies=no,status=no,menubar=no,scrollbars=no,resizable=yes,copyhistory=no');
}