$(document).ready(function() {
            $("#login-submit").click(function() {
                var username = $("#username").val().trim();
                var password = $("#password").val().trim();

                if (username != "" && password != "") {
                    $.ajax({
                        url: 'ajax_login.php',
                        type: 'post',
                        data: {
                            username: username,
                            password: password
                        },
                        success: function(response) {
                            var msg = "";
                            if (response == 1) {
                                $("#login-submit").text("Login");
                                $("#login-form").fadeOut("slow");

                                window.location = "dashboard.php";
                            } else {
                                msg = "Invalid username and password!";
                            }
                            $("#message").html(msg);
                        }
                    }    );
                }
            });

        });