function popupWindow(url) {
      popup=window.open(url,'popupWindow','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=yes,copyhistory=no,width=430,height=400, left=50,right=50');
      popup.focus();
    }
    function closeWindow(popup){
      popup.close();
    }