Expose ModalPopupExtender show and Hide properties in a User Control

I have a user control that contains a modalpopupextender.  How can I make the Show and Hide methods of the extender available to the page where I put the user control?

Example use in a page:
 
<uc1:CaseModal runat="server" id="cm1" />
 
Then, in my code page I want to do something like:
 
Public Sub....
 
   cm1.Show()   <---this would trigger the Show method of the Extender IN the user control.
 
End Sub
 
 
Here is a simple user control:
<asp:Panel id="modalPnl" runat="server" style="display:none;" CssClass="modalPopup">
   <asp:LinkButton id="closeCaseModal" runat="server" text="Close" />
</asp:Panel>
 
        <cc1:ModalPopupExtender 
            ID="CaseModalExtender" 
            runat="server" 
            TargetControlID="fakeButton" 
            PopupControlID="modalPnl"
            OkControlID="closeCaseModal"
            BackgroundCssClass="modalBackground" />
        <asp:LinkButton ID="fakebutton" runat="server" style="display:none;" />

Select allOpen in new window