function showAdvzy(form_num)
   {

      var n_advzy   = document.forms[form_num].advzy_num.value;

      if(n_advzy == "" )

         {
            alert("Advisory Number can not be Null");
            return false;
         }

      var goto_page = "showAdvisoryHandler.jsp?advzy=" +n_advzy;

      msgWindow=window.open('','window2', 'toolbar=no,scrollbars=yes, width=800,height=600');

      msgWindow.location.href=goto_page;

   } // end showAdvzy()