Mini k2 Support for multi categories?

<?php
/**
 * @version		$Id: default.php 565 2010-09-23 11:48:48Z schro $
 * @package		Mini K2
 * @subpackage	Portfolio with quicksand sorting sub template
 * @author	    TemplatePlazza http://www.templateplazza.com
 * @copyright	Copyright (c) 2007 - 2012 TemplatePlazza, web developement and design marketplace. All rights reserved.
 * @copyright	Copyright (c) 2011 tutorialzine.com
 * @copyright	Copyright (c) 2006 - 2012 JoomlaWorks, a business unit of Nuevvo Webware Ltd. All rights reserved.
 * @license		GNU/GPL license: http://www.gnu.org/copyleft/gpl.html
 */
 
// no direct access
defined('_JEXEC') or die('Restricted access');
?>
 
<div id="filter"></div>
 
<div id="folio-container">
 
    <ul id="stage">
 
    <?php 
    foreach ($items as $key=>$item){
		$itemID = $item->id;
    ?>  
 
	<?php $db = JFactory::getDBO();
			$query = "SELECT c.`id`,c.`name`,c.`alias` FROM #__k2_additional_categories AS ca, #__k2_categories AS c WHERE ca.`itemID` ='$itemID' AND c.`id`=ca.`catid`";
			$db->setQuery( $query );
			$sel_value = $db->loadObjectList();
 
		 	echo  '<li data-type="'.$item->categoryname;
				foreach($sel_value as $v) {   		
					echo ', '.$v->name;
				} 
			echo '" />';
    ?>
            <a href="<?php echo $item->link; ?>">
            <?php if (!$item->image): ?>
            <img src="images/header/no-image-th.jpg" alt="<?php echo $item->title; ?>" />
            <?php else: ?>
                <img src="<?php echo resizeImageHelper::getResizedImage('/'.$item->image, $tmbWidth, $tmbHeight, $option); ?>" alt="<?php echo $item->title; ?>" style="height:<?php echo $tmbHeight; ?>px; width:<?php echo $tmbWidth; ?>px" />
				<?php endif; ?>            
                <div class="description">
                <h3><?php echo $item->title; ?></h3>
 
         <p><?php if($params->get('itemIntroText')) { echo $item->introtext; } ?></p>
                </div>
            </a>
        </li>
    <?php } ?>
    </ul> 
</div>
 
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