Events on Master Page event not firing with Validation Controls

[PymncyncDig]

I have applied some textboxes in content pages. I have applied some Validations Controls on it.What i have done so far is this,\[code\] <asp:TextBox ID="txtE1" runat="server" CssClass="input_type_text" Width="75px" CausesValidation="false" ValidationGroup="te" ><asp:RequiredFieldValidator ID="rqdE1" runat="server" ControlToValidate="txtE1" ErrorMessage="*"></asp:RequiredFieldValidator>\[/code\]I have a Sign Out link on the master Page. I am unable to generate that event.Any other thing i am missing/required?