Joomla message template

<?php
/**
 * @package     Joomla.Administrator
 * @subpackage  Template.Isis
 *
 * @copyright   Copyright (C) 2005 - 2014 Open Source Matters, Inc. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

defined('_JEXEC') or die;

function renderMessage($msgList)
{
    $buffer  = null;
    $buffer .= "\n<div id=\"system-message-container\">";
    $alert = array('error' => 'alert-error', 'warning' => '', 'notice' => 'alert-info', 'message' => 'alert-success');

    // Only render the message list and the close button if $msgList has items
    if (is_array($msgList) && (count($msgList) >= 1))
    {
        $buffer .= '<button type="button" class="close" data-dismiss="alert">&times;</button>';
        foreach ($msgList as $type => $msgs)
        {
            $buffer .= '<div class="alert ' . $alert[$type]. '">';
            $buffer .= "\n<h4 class=\"alert-heading\">" . JText::_($type) . "</h4>";
            if (count($msgs))
            {
                foreach ($msgs as $msg)
                {
                    $buffer .= "\n\t\t<p>" . $msg . "</p>";
                }
            }
            $buffer .= "\n</div>";
        }
    }

    $buffer .= "\n</div>";

    return $buffer;
}