Working

            /*
             * Login
             * These functions will handle the login process through AJAX
             */
            $('#form-login').submit(function(event)
            {
                // Values
                var login = $.trim($('#login').val()),
                    pass = $.trim($('#pass').val());

                // Check inputs
                if (login.length === 0)
                {
                    // Display message
                    displayError('Please fill in your login');
                    return false;
                }
                else if (pass.length === 0)
                {
                    // Remove empty login message if displayed
                    formWrapper.clearMessages('Please fill in your login');

                    // Display message
                    displayError('Please fill in your password');
                    return false;
                }
                else
                {
                    // Remove previous messages
                    formWrapper.clearMessages();

                    // Show progress
                    displayLoading('Checking credentials...');

                    // Stop normal behavior
                    event.preventDefault();


                     //This is where you may do your AJAX call, for instance:
                     $.ajax({
                            type: "GET",
                            url: "functions/ajax.php",
                            data: {
                                func:   "login",
                                username: login,
                                password: pass
                            },

                            error: function() {
                                formWrapper.clearMessages();
                                displayError('Error while contacting server, please try again');
                            },
                            success: function(data) {

                                if(data == "logged") {
                                setTimeout(function() {
                                document.location.href = 'dashboard.php'
                                                      }, 2000);
                                } else if(data == "failed") {
                                    formWrapper.clearMessages();
                                    displayError('Invalid user/password, please try again');
                                } else if(data == "banned") {
                                    formWrapper.clearMessages();
                                    displayError('Account suspended, contact support!');
                                } else if(data == "inactive") {
                                    formWrapper.clearMessages();
                                    displayError('Account inactive, check Your email!');
                                }
                            }
                    });
                }
            });