How to show name of category which came?

I have list of article from menu category. I would like to show this name of category with link to this category as kind of a back button. I can't show name of category. How to do this? This is article page list: http://goo.gl/yckD and article list page http://goo.gl/Vyto

This is a category list as menu: "main_menu"
acces to article list from link in menu:

<a href="article-list.php?category_num=3"
">Category 3</a>

Below all codes.
Thanks for help.

==============================================
Article List

<?php

require_once "/home/trener_osobisty/trener_osobisty/cmsAdmin/lib/viewer_functions.php";

list($main_menuRecords, $selectedCategory) = getCategories(array(
'tableName' => 'main_menu',
));

list($artykulyRecords, $artykulyMetaData) = getRecords(array(
'tableName' => 'artykuly',
'perPage' => '6',

));

?>

----------------------------------------------


<!-- STEP2: Display Records -->

<?php foreach ($artykulyRecords as $record): ?>

<?php foreach ($record['zdjecie_glowne'] as $upload): ?>
<?php if ($upload['hasThumbnail']): ?>
<a href="<?php echo $record['_link'] ?>">
<img src="<?php echo $upload['thumbUrlPath'] ?>" alt="<?php echo $record['title'] ?>" width="<?php echo $upload['thumbWidth'] ?>" height="<?php echo $upload['thumbHeight'] ?>" border="0" align="left" class="foto-ramka" /></a>
<?php endif ?>
<?php endforeach ?>
<!-- STEP2a: /Display Uploads -->


<?php echo date("d.m.Y",strtotime($record['createdDate'])); ?>

<a href="<?php echo $record['_link'] ?>"><?php echo $record['title'] ?></a><br/>
<?php echo $record['zajawka'] ?>
<br />

<?php endforeach ?>
<?php if (!$artykulyRecords): ?>
No data!<br/>

<?php endif ?>



==============================================


Article detail

<?php

require_once "/home/trener_osobisty/trener_osobisty/cmsAdmin/lib/viewer_functions.php";

list($artykulyRecords, $artykulyMetaData) = getRecords(array(
'tableName' => 'artykuly',
'where' => whereRecordNumberInUrl(1),
'limit' => '1',
));
$artykulyRecord = @$artykulyRecords[0]; // get first record

// show error message if no matching record is found
if (!$artykulyRecord) {
header("HTTP/1.0 404 Not Found");
print "Record not found!";
exit;
}


?>

----------------------------------------------

<?php echo $artykulyRecord['title'] ?>
<?php echo $artykulyRecord['zajawka'] ?>
<?php echo $artykulyRecord['content'] ?>


<?php foreach ($artykulyRecord['galeria_zdjec'] as $upload): ?>
<a href="<?php echo $upload['urlPath'] ?>" title="<?php echo $upload['info1'] ?>" rel="lightbox[roadtrip]"><img src="<?php echo $upload['thumbUrlPath'] ?>" alt="" width="<?php echo $upload['thumbWidth2'] ?>" height="<?php echo $upload['thumbHeight2'] ?>" border="0" class="foto-ramka" /></a>


<?php $maxCols=4; if (@++$count % $maxCols == 0): ?>

<?php endif ?>
<?php endforeach; ?>