$formregister = new FormConstructor('frmRegisterAccount', 'post', '');
        $formvalidator = new FormValidator($formregister);
        $forminputview = new FormInputView($formregister, $formvalidator);

        // Add all the forms.
        $formregister->addFieldset('Account data');
        $formregister->addInput('text', 'username', 'Username:', true, '', 'style="width: 150px;"')->addInlineInput('text', '', '', true, '', 'style="width: 150px;"');
        $formregister->addInput('password', 'password1', 'Password:', true, '', 'style="width: 150px;"');
        $formregister->addInput('password', 'password2', '(Re-type) Password:', true, '', 'style="width: 150px;"');
        $formregister->addFieldset('Personal data');
        $formregister->addInput('text', 'firstname', 'First name:', true, '', 'style="width: 150px;"');
        $formregister->addInput('text', 'lastname', 'Last name:', true, '', 'style="width: 150px;"');
        $formregister->addInput('date', 'birthday', 'Date of birth:', true, '',  'style="width: 150px;"');
        $formregister->addInput('email', 'email', 'Email adress:', true, '', 'style="width: 150px;"');
        $formregister->addFieldset('', 'buttonlist');
        $formregister->addButton('submit', 'Register');
        $formregister->addButton('reset', 'Reset');
        $formregister->addButton('button', 'Click me');

        // Validate all fields.
        $formvalidator->validate();

        // Render the form.
        echo $forminputview->getViewHTML($indent);