B/S安全退出

<script language="javascript" type="text/javascript">
        function A_exit() {
            if (confirm("你确定要退出吗?") == true) {
                location.replace("/ClearIE.aspx");
                event.returnValue = false;
                return true;
            } else {
                return false;
            }
        }
    </script>

　　

ClearIE.aspx页面代码

 <script type="text/ecmascript" language="javascript">
        function b(){
            var Backlen = history.length;
            if (Backlen > 0) {
                history.go(-Backlen);
            }
            top.window.location.href = "/MemberInfo/login.aspx"; 
        }
         </script>

　　

protected void Page_Load(object sender, EventArgs e)
    {
        clearIE();
    }


    public void clearIE()
    {
        Session["user"] = null;
        Session.Clear();
        Response.Cache.SetExpires(DateTime.Now.AddSeconds(5));
        Response.Cache.SetSlidingExpiration(true);
        Session.Abandon();
    }