Web Form keeps reloading on button click clear cache

I have a web form that pops-up if a user needs to sign an annual user agreement.  So on button click I run a javascript command from the code page to clear the authentication and then reload the page.  the problem is that went I do this it stays in a continual loop to keep showing the client certificate.  Ther eare no onloads set for the head or body or form tags.  Dont know why it keeps asking for the certificate???
<tr> <td style="text-align:center"> <telerik:RadButton ID="btnAgree" runat="server" ButtonType="LinkButton" Text="Sign Agreement"></telerik:RadButton> <asp:TextBox ID="txtSigned" runat="server" Width="400px" Height="60px" TextMode="MultiLine" ReadOnly="true" Visible="false" Font-Size="X-Small" CssClas ...