Write javascript to open child window and then close parent window

if (!window.opener)

{

newwin=window.open(window.location, name, "fullscreen=no,toolbar=no,status=no,menubar=no,scrollbars=no,resizable=no,directories=no,location=no,width=" + width + ",height=" + height + ",left=" + left + ",top=" + top);

window.opener=""

window.close();

}