<script>
            //var username = document.forms["login"]["username"];
            //var username = document.forms["login"]["password"];
            var username = document.getElementsByName("username")[0].value;
            var username = document.getElementsByName("password")[0].value;


            if (username == "user" && password == "secret"){
                alert("Login succesful");
                //window.location = "studentdp.php";
            }
            else{
            alert("Login credentials are incorrect. Try Again.");
            }
    </script>