Possible Duplicate:
Disabling LinkButton doesn't disable the click event in javascript

I have a linkbutton in ASP.NET.

I have set its property Enabled = false;

<asp:LinkButton ID="lnkButton" runat="server" 
                Enabled = "false" 
                OnClientClick="return confirm('Are you sure ?')" > Click Me
                        </asp:LinkButton>

Event thought I have set the property Enabled = false the OnClientClick event is still fired.

How can I prevent the OnClientClick event from firing?

asp.net
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