Disable browser back button functionality in Mozilla.

Add the following javascript code in your aspx page.

 

Code:

 

<head id="Head1" runat="server">

    <script type="text/javascript">

    //disabling browser back button for mozila

        function noBack(){window.history.forward()}

        noBack();

        window.onload=noBack;

        window.onpageshow=function(evt){if(evt.persisted)noBack()}

        window.onunload=function(){void(0)}

    </script>

</head>