function cont_popup(url,ww,hh,tt,ll,scro) {
  cont = window.open(url,'','toolbar=no,location=no,directories=no,status=yes,scrollbars=' + scro + ',resizable=no,copyhistory=no,width=' + ww + ',height=' + hh + ',top=' + tt + ',left=' + ll);  
  cont.opener = self;
  cont.focus();
  return;
}