Timothy

            var msg = '';          
            if (!eval(name).GetIsValid()) {
                msg = eval(name).GetErrorText() + "\n";
            }
            return msg;
    }
       

    { alert('Validation OK');}
    else
    {
       var ary=['txtVndrnobyOffLine','txtInvoicebyOffLine','txtEcrNobyOffLine'];  //要檢查的欄位
       var result='';
       for( i in ary)
       {
         result=result+ErrorString(ary[i]);
       }
       alert(result);     
    }