function pop(x)
{ if(x=="")
  { return false;
  }
  else
  { winURL = "article_display.php?record_num="+x;
    popWin = window.open(winURL,"window","toolbar=no,location=no,directories=no,menubar=no,resizable=yes,width=680,height=400,scrollbars=yes");
  }
}