Client side form validation C# asp.net 2.0

Hi

 I like to know is it possible to do client side validation for multiple text box by using RequiredFieldValidator  and show only one message.

 

  <asp:TextBox ID="lname" runat="server"  size="30" ></asp:TextBox><asp:RequiredFieldValidator  ID="RequiredFieldValidator2" runat="server" ErrorMessage="last name" ControlToValidate="lname" ></asp:RequiredFieldValidator>

  <asp:TextBox ID="fname" runat="server"  size="30" ></asp:TextBox><asp:RequiredFieldValidator  ID="RequiredFieldValidator2" runat="server" ErrorMessage="first name" ControlToValidate="fname" ></asp:RequiredFieldValidator>

only one message first name, last name invalid.

Pl. help.

Thanks.
...