Verschiedene Datensätze über Button laden

defined('_JEXEC') or die('Restricted access');
?>

<form action="index.php?option=com_unit&task=abc&format=ajax

<?php foreach ($this->unitstep as $unitstep) : ?>
<div class="container-fluid">
<div class="row-fluid">
<div class="span9">
<p><?php echo $unitstep->content; ?></p>
</div>
<div class="span3">
<a id="IA1" class="btn btn-outline-primary btn-block" role="button" type="submit"><?php echo $unitstep->interact1text; ?></a>
<a id="IA2" class="btn btn-outline-primary btn-block" role="button" type="submit"><?php echo $unitstep->interact2text; ?></a>
<a id="IA3" class="btn btn-outline-primary btn-block" role="button" type="submit"><?php echo $unitstep->interact3text; ?></a>
<a id="IA4" class="btn btn-outline-primary btn-block" role="button" type="submit"><?php echo $unitstep->interact4text; ?></a>
<a id="IA5" class="btn btn-outline-primary btn-block" role="button" type="submit"><?php echo $unitstep->interact5text; ?></a>
<p id="demo"></p>

<script>
document.getElementById("IA1").onclick = function() {FunctionIA1()};
document.getElementById("IA2").onclick = function() {FunctionIA2()};
document.getElementById("IA3").onclick = function() {FunctionIA3()};
document.getElementById("IA4").onclick = function() {FunctionIA4()};
document.getElementById("IA5").onclick = function() {FunctionIA5()};

function FunctionIA1() {
<?php $gotostep = $unitstep->interact1gotostepno ?>
document.getElementById("demo").innerHTML = "Du willst zu Schritt " + <?php echo $gotostep ?>;}

function FunctionIA2() {
<?php $gotostep = $unitstep->interact2gotostepno ?>
document.getElementById("demo").innerHTML = "Du willst zu Schritt " + <?php echo $gotostep ?>;}

function FunctionIA3() {
<?php $gotostep = $unitstep->interact3gotostepno ?>
document.getElementById("demo").innerHTML = "Du willst zu Schritt " + <?php echo $gotostep ?> ;}

function FunctionIA4() {
<?php $gotostep = $unitstep->interact4gotostepno ?>
document.getElementById("demo").innerHTML = "Du willst zu Schritt " + <?php echo $gotostep ?> ;}

function FunctionIA5() {
<?php $gotostep = $unitstep->interact5gotostepno ?>
document.getElementById("demo").innerHTML = "Du willst zu Schritt " + <?php echo $gotostep ?> ;}
</script>

</div>
</div>
</div>
<?php endforeach; ?>[/tt]

defined('_JEXEC') or die;

class UnitController extends JControllerLegacy
{

//function for call the task out of the URL,
public function abc()
{
// Set view
$this->input->set('view', 'Abc');
parent::display();
}
}

<?php
defined('_JEXEC') or die;

jimport('joomla.application.component.view');

class unitViewAbc extends JViewLegacy
{
function display($tpl = null)
{
parent::display($tpl);
}
}