function n_userlookup()
{
       var ordercode=document.time_order.ordercode.value;
      if (ordercode=="" ||isNaN(ordercode))
         { 
         alert("請正確輸入出件編號!")
        document.time_order.ordercode.focus();
         return false; 
         }

       var nphone=document.time_order.nphone.value;
      if (nphone==""||isNaN(nphone))
         { alert("請正確輸入聯系電話!")
        document.time_order.nphone.focus();
         return false; }
     return true;    
     }