how to prevent IE back button click using java script in an asp.net page

write the following code to achieve IE back button disabling

<script type="text/javascript">
        function noBack() {
            window.history.forward();
        }
        noBack();
        window.onload = noBack;
        window.onpageshow = function (evt) {
            if (evt.persisted) noBack();
        }
        window.onunload = function () {
            void (0);
        }
    </script>