Code not executing, nor error.. (javascript)

Trying to implement AJAX in the style of Zend Framework In Action.
http://www.manning.com/allen/
(source code available)

I have the example site Places up and running.

Now trying to do some ZF/Ajax on my own but no success..or failure.
Problem:
None of the code blocks
evalUsername.prototype.success = function(o)
or
evalUsername.prototype.failure=function(o)

will execute!

I think it's quite similar to the ZFIA code but it just doesn't work. What is wrong with "my" code?
I get no error in the Firefox error console.
I'm not so hot on javascript.

registerform.js
----------------
/**
 * Debug
 */
function apa()
{
    alert("apa"); 
}

function hej_apa()
{
    alert("Hej apan Östen");
}


function evalUsername(userName, baseUrl) {

    var sUrl = baseUrl + "/account/checkusername/format/json/username/"
        + userName ;

    // perform the request.
    YAHOO.util.Connect.initHeader('X_REQUESTED_WITH', 'XMLHttpRequest');
    YAHOO.util.Connect.asyncRequest('GET', sUrl, this);



}

evalUsername.prototype.success = function(o)
{
    
    if(o.responseText !== undefined)
    {
        var json = eval("(" + o.responseText + ")") ;
        document.getElementById('testi').innerHTML=json.result;        
    }
    else
    {   
        this.failure(o);
    }
}


evalUsername.prototype.failure=function(o) {
     document.getElementById("testi").value="epic fail";
}


AccountController.php
----------------------
.
.
.

        //This controller contains AJAX-functions
    public $ajaxable = array('feedback'=> array('json')); //inspired by Zend Framework In Action http://www.manning.com/allen/


    public function init()
    {

            //inspired by Zend Framework In Action http://www.manning.com/allen/ :
            $ajaxContext = $this->_helper->getHelper('AjaxContext');
            $ajaxContext->initContext();
        
            
            
    }    
.
.
.
        /**
         * Ajax method
         */
        public function checkusernameAction()
        {
            $u=$this->getRequest()->getParam("username");
            $this->view->result=($u=="kalle")?true:false; //return json values
        }
.
.
.


registerform.phtml - call js function
--------------------------------------
<?php

$this->headScript()->appendFile($this->baseUrl().'/js/yui/yahoo.js');
$this->headScript()->appendFile($this->baseUrl().'/js/yui/event.js');
$this->headScript()->appendFile($this->baseUrl().'/js/yui/connection.js');
$this->headScript()->appendFile($this->baseUrl().'/js/registerform.js');

if(isset($this->form))
{
    ?>
    <br/>
    <input type="button" onclick="new evalUsername(getElementById('user-username').value,'<?=$this->baseUrl?>'); return false;" value="Evaluera username" />
    <br/>
    <input type="button" onclick="apa()" value="Apa" />
    <br/><label id="testi">testi-laabel</label>

    <?php


    $p=$this->form->user;
    $p->username->setLabel("Användarnamn");
    $p->password->setLabel("Lösenord");
    $p->confirmpass->setLabel("Bekräfta lösenord");

    $p=$this->form->name;
    $p->firstname->setLabel("Förnamn");
    $p->sirname->setLabel("Efternamn");

    $p=$this->form->email;
    $p->email->setLabel("E-post");
    $p->confirm->setLabel("Bekräfta e-post");

    $p=$this->form->location;
    $p->city->setLabel("Närmaste stad");

    $p=$this->form->sex;
    $p->sex->setLabel("Kön");

    $p=$this->form->dob;
    $p->year->setLabel("År");
    $p->month->setLabel("Månad");
    $p->day->setLabel("Dag");

    $this->form->submit->setLabel("Skicka");

    echo $this->form;
}
else
{
    ?>
    
    <?php
}
?>








CODE FROM "ZEND FRAMEWORK IN ACTION", "PLACES" APPLICATION - WORKS (manning.com/allen)
______________________________________________


_reviewFeedback.phtml 
----------------------

<?php
$id = $this->id;
$yesCount = $this->helpful_yes;
$totalCount = $this->helpful_total;
?>

<span id="counts-<?php echo $id ?>" >
    <?php echo $yesCount ?> of <?php echo $totalCount; ?>
</span>
people found this review helpful. Was this review 
helpful to you? 
<span id="yesno-<?php echo $id?>" >
    <a href="#" onclick="new ReviewFeedback(1, 
        <?php echo $id; ?>,'<?php echo $this->baseUrl(); ?>');
        return false;">Yes</a> 
    <a href="#" onclick="new ReviewFeedback(0, 
        <?php echo $id; ?>,'<?php echo $this->baseUrl(); ?>'); 
        return false;">No</a>
<span id="spinner-<?php echo $id ?>"></span></span>
<div id="message-<?php echo $id ?>"></div>


review_feedback.js
-------------------
// ReviewFeedback class used as callback to

// YUI connection manager

function ReviewFeedback(response, reviewId, baseUrl) {

	this.id = reviewId;

	this.baseUrl = baseUrl;

	

	// turn on spinner and empty the informationmessage

	this.startSpinner();

	this.message("","");



	// ensure that we don't have to encode parameters

	var reviewId = parseInt(reviewId);

	var response = parseInt(response);



    var sUrl = baseUrl + "/review/feedback/format/json/id/"

        + reviewId + "/helpful/" + response;



	// perform the request.

    YAHOO.util.Connect.initHeader('X_REQUESTED_WITH', 'XMLHttpRequest');

    YAHOO.util.Connect.asyncRequest('GET', sUrl, this);



} 



ReviewFeedback.prototype.success = function(o) {

    if(o.responseText !== undefined){

		var json = eval("(" + o.responseText + ")") ;

		if(json.result && json.id == this.id) {		

			// update the information text to include the new counts

            document.getElementById('counts-'+json.id).innerHTML 

                = json.helpful_yes + ' of ' + json.helpful_total;

			

            // say thank you and stop the spinner

            this.message("success", 'Thank you for your feedback.');

            this.stopSpinner();

			

            // remove yes/no buttons as they aren't needed after feedback

            document.getElementById('yesno-'+json.id).innerHTML = "";			

        } else {

            this.failure(o);

        }

    }

}



ReviewFeedback.prototype.failure = function(o) {

	// inform the user of failure and stop the spinner

	var text = "Sorry, our feedback system hasn't worked. Please try later.";

	this.message("failed", text);

	this.stopSpinner();

}



ReviewFeedback.prototype.startSpinner = function() {

    var spinner = document.getElementById('spinner-'+this.id);

    var url = this.baseUrl+'/img/logo.gif';

    spinner.innerHTML = '<img src="'+ url +' " border="0" />';

}



ReviewFeedback.prototype.stopSpinner = function() {

	document.getElementById('spinner-'+this.id).innerHTML = ""; 

}



ReviewFeedback.prototype.message = function(class_, text) {

	document.getElementById('message-'+this.id).className = class_;

	document.getElementById('message-'+this.id).innerHTML = text; 

}




ReviewController.php
--------------------
<?php

class ReviewController extends Zend_Controller_Action
{
    public $ajaxable = array('feedback'=> array('json'));
    function init()
    {
        $readActions = array('index' , 'feedback' , 'add');
        $writeActions = array();
        $this->_helper->_acl->allow('member', $readActions);
        $this->_helper->_acl->allow('admin', $writeActions);
        
        $ajaxContext = $this->_helper->getHelper('AjaxContext');
        //$ajaxContext->addActionContext('feedback', 'json');
        $ajaxContext->initContext();

       
    }
    
    public function addAction()
    {
    	$userId = (int)Zend_Auth::getInstance()->getIdentity()->id;
    	$users = new Users();
    	$user = $users->fetchRow('id='.$userId);
    	
        $this->view->messages = array();
        $redirector = $this->_helper->getHelper('Redirector'); /* @var $redirector Zend_Controller_Action_Helper_Redirector */
        
        $placeId = (int) $this->getRequest()->getParam('placeId');
        $this->view->placeId = $placeId;
        
        if ($this->view->placeId > 0) {
            $places = new Places();
            $place = $places->fetchRow("id = $placeId");
            $this->view->place = $place;
        }
        
        if ($this->getRequest()->isPost()) {
            $submitAction = $this->getRequest()->getPost('submitAction', 'cancel');
            
            switch (strtolower($submitAction)) {
                case 'save':
                    
                    $filters = array('*' => array('StringTrim' , 'StripTags'));
                    $validators = array(
                            'review' => array('NotEmpty', 
                                    'messages'=>array(Zend_Validate_NotEmpty::IS_EMPTY => 'Please provide a review!')),
                            'rating' => array('Digits', 
                                    'messages'=>array(Zend_Validate_Digits::STRING_EMPTY => 'Please provide a rating!',
                                        Zend_Validate_Digits::NOT_DIGITS => 'Please provide a rating!'))
                    );
                    $input = new Zend_Filter_Input($filters, $validators, $_POST);
                    
                    if ($input->isValid()) {
                    	
                    	$reviews = new Reviews();
                    	$newReview = $reviews->createRow();
                    	
                    	$newReview->place_id = $placeId;
                    	$newReview->body = $input->getUnescaped('review');
                    	$newReview->rating = $input->getUnescaped('rating');
                    	
                    	$newReview->save();
                    	
                        $flashMessenger = $this->_helper->getHelper('FlashMessenger');
                        $flashMessenger->addMessage('Thank you for your review!');
                        
                        $redirector->goto('index', 'place', null, array('id' => $placeId));
                        
                    } else {
                        // failed - fall through and redisplay theform
                        $this->view->messages = $input->getMessages();
                        
                        $this->view->review = $input->getUnescaped('review');
                        $this->view->rating = $input->getUnescaped('rating');
                    }
                    break;
                    
                default:
                    // cancel
                    $redirector->goto('index', 'place', null, array('id' => $placeId));
                            }
        } else {
        	// set up default values for form fields
        	$this->view->rating = null;
        	$this->view->review = null;
        }
        
        $this->view->username = $user->name();
        
        
    }

    public function feedbackAction()
    {
        $id = (int)$this->getRequest()->getParam('id');
        if ($id == 0) {
            $this->view->result = false;
            return;
        }
        
        $helpful = (int)$this->getRequest()->getParam('helpful');
        $helpful = $helpful == 0 ? 0 : 1; //ensure is only 0 or 1
        
        $reviewsFinder = new Reviews();
        $review = $reviewsFinder->fetchRow('id='.$id);
        if ($review->id != $id) {
            $this->view->result = false;
            return;
        }

        if ($helpful) {
            $sql = "Update reviews SET helpful_yes = (helpful_yes+1), 
                    helpful_total = (helpful_total+1) 
                    WHERE id = $id";
        } else {
            $sql = "Update reviews SET helpful_total = (helpful_total+1) 
                    WHERE id = $id";
        }
        $reviewsFinder->getAdapter()->query($sql);
        
        $review = $reviewsFinder->fetchRow('id='.$id);
        
        $this->view->result = true;
        $this->view->id = $id;
        $this->view->helpful_yes = $review->helpful_yes;
        $this->view->helpful_total = $review->helpful_total;
    }
    
}

Select allOpen in new window