Complete Ajax Forms

Hi all,

I want to make dynamically loadable ajax forms. For example: I first load index page with some content, when i want user to log in and I load login form through ajax. The problem is when I get error, only the errors are rendered without the page content. When I do ajax validation with changed url everything is fine.
I want to build single page app.

Here is my controller:

public function actionLogin()
    {
        $model=new LoginForm;

        // if it is ajax validation request
        if(isset($_POST['ajax']) && $_POST['ajax']==='login-form')
        {
            echo CActiveForm::validate($model);
            Yii::app()->end();
        }

        // collect user input data
        if(isset($_POST['LoginForm']))
        {
            $model->attributes=$_POST['LoginForm'];
            // validate user input and redirect to the previous page if valid
            if($model->validate() && $model->login()) {
                $user = User::model()->findByAttributes(array('username' => $model->username));
                $user->date_lastvisit = date('Y-m-d H:i:s', time());
                $user->update(array('date_lastvisit'), true);
                $this->redirect(Yii::app()->user->returnUrl);
            }
        }
        // display the login form
        $this->render('login',array('model'=>$model));
    }

and my view:

<?php $this->pageTitle=Yii::app()->name . ' - Login'; ?>

<div class="form center">
<?php $form=$this->beginWidget('CActiveForm', array(
	'id'=>'login-form',
    'enableAjaxValidation'=>true,
	'clientOptions'=>array(
		'validateOnSubmit'=>true,
        'validateOnChange'=>false,
        'validateOnType'=>false,
	),
)); ?>

    <h1>Login</h1>

    <p>Please fill out the following form with your login credentials:</p>
	<p class="note">Fields with <span class="required">*</span> are required.</p>

	<div class="row">
		<?php echo $form->labelEx($model,'username'); ?>
		<?php echo $form->textField($model,'username'); ?>
		<?php echo $form->error($model,'username'); ?>
	</div>

	<div class="row">
		<?php echo $form->labelEx($model,'password'); ?>
		<?php echo $form->passwordField($model,'password'); ?>
		<?php echo $form->error($model,'password'); ?>
	</div>

	<div class="row rememberMe">
		<?php echo $form->checkBox($model,'rememberMe'); ?>
		<?php echo $form->label($model,'rememberMe'); ?>
		<?php echo $form->error($model,'rememberMe'); ?>
	</div>

	<div class="row buttons">
		<?php echo CHtml::submitButton('Login'); ?>
	</div>

<?php $this->endWidget(); ?>
</div>&lt!-- form -->

Thanks for any help