accordinepane1 onclick event

how can i write a serverside event when I click on Accordionpane1 (Minimised and Maximised)..

Thanks

<asp:Accordion ID="Accordion1" runat="server" SelectedIndex="0" HeaderCssClass="exp-c"
HeaderSelectedCssClass="exp-c" ContentCssClass="exp-c"
FadeTransitions="true" SuppressHeaderPostbacks="False" TransitionDuration="250" FramesPerSecond="40" RequireOpenedPane="False" AutoSize="None" >

     <Panes>
    
     
      <asp:AccordionPane ID="AccordionPane1" runat="server">
<Header>
   <asp:LinkButton ID="LinkButton2" runat="server">Visited Products</asp:LinkButton>
</Header>

<Content>
   <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>

</Content>
</asp:AccordionPane>
     
    
     
     </Panes>


    </asp:Accordion>