var win = null;
function newWindow(mypage, myname)
{
	LeftPosition = (screen.width / 2) / 2;
	h = (screen.height / 2) / 2;
	settings = 'width=600,height=400,top='+h+',left='+LeftPosition+',scrollbars=yes,location=yes,directories=no,status=no,menubar=no,toolbar=no,resizable=no';
	win = window.open(mypage, myname, settings);
}