confirmation and navigate to another page

Question

hi every one i need solutin for this code now working in my project 


code in aspx page:-
--------------------
<script type="text/javascript">

        function show() {

            if (confirm('r u sure?')) {

                window.location.replace('yourpage.aspx');

            }

        }

    </script>


code behind in .cs file:-
----------------

 else

                {

                    Page.ClientScript.RegisterStartupScript(this.GetType(), "open", "show();", true);

                }