var popup_pop;

   function popup(url, width, height, title, scrollbar) {

      if(!scrollbar)
         scrollbar = "scrollbars=no";
      else
         scrollbar = "scrollbars=yes";
         
   
      popup_pop = window.open(url, title, "resizable=nu,toolbar=no,location=no,directories=no,status=no,menubar=no," + scrollbar + ",copyhistory=0,width=" + width + ",height=" + height);
      popup_pop.location = url;

      setTimeout("popuptofront()",100);
   }

   function popuptofront() {
      popup_pop.focus();
   }