<form id="smtpSettings" >
            <div class="col-xs-10">
                <input type="text" class="form-control" name="smtpserver"   id="smtpserver" placeholder="SMPT Server">
              </div>
              <div class="col-xs-10">
                <input type="text" class="form-control email_input_padding" name="username" id="username" placeholder="Brukernavn">
              </div>
              <div class="col-xs-10">
                <input type="password" class="form-control  email_input_padding" name = "password" value="password" id = "password"   placeholder="Passord">
              </div>
           <button type="button" class="btn btn-primary" id="SaveEmailSettings">Lagre endringer</button>
  <form>

$('#SaveEmailSettings').on('click', function(event) {
                //alert(event.type + ' callback');


                var formData = {
                    'smtpserver': $("#smtpserver").val(),
                    'username': $("#username").val(),
                    'password': $("#password").val()
                };

                //debug: alert(event.type + $('input[name=password]').val());

                $.ajax({
                url: "mail_form_settings.php",
                type: "post",
                dataType: "json",
                data: formData,
                success: function(data) {
                alert(response);
                }
                });


           });

$customer_id = 1;

$smtp_server = $_POST['smtpserver'];
$smtp_username = $_POST['username'];
$smtp_password = $_POST['password'];

$UpdateFormSettings = "update class_customer_settings set smtp_server=" . $smtp_server . ",smtp_user=" . $smtp_username . ",smtp_password=". $smtp_password . " where customer_id =" .$customer_id;
 mysql_query($UpdateFormSettings, $con) or die ("Error in query: $UpdateFormSettings " . mysql_error());

$.ajax({
          url: "mail_form_settings.php",
          type: "post",
          dataType: "json",
          data: $('#smtpSettings').serialize(),
          success: function(data) {
         alert(response);
         }
     });