public static function treeselectbox(&$params, $id = 0, $level = 0)
	{

		$mainframe = JFactory::getApplication();
		$root_id = (int)$params->get('root_id2');
		$option = JRequest::getCmd('option');
		$view = JRequest::getCmd('view');
		$category = JRequest::getInt('id');
		$id = (int)$id;
		$user = JFactory::getUser();
		$aid = (int)$user->get('aid');
		$db = JFactory::getDBO();
		if (($root_id != 0) && ($level == 0))
		{
			$query = "SELECT * FROM #__k2_categories WHERE parent={$root_id} AND published=1 AND trash=0 ";
		}
		else
		{
			$query = "SELECT * FROM #__k2_categories WHERE parent={$id} AND published=1 AND trash=0 ";
		}

		if (K2_JVERSION != '15')
		{
			$query .= " AND access IN(".implode(',', $user->getAuthorisedViewLevels()).") ";
			if ($mainframe->getLanguageFilter())
			{
				$languageTag = JFactory::getLanguage()->getTag();
				$query .= " AND language IN (".$db->Quote($languageTag).", ".$db->Quote('*').") ";
			}
		}
		else
		{
			$query .= " AND access <= {$aid}";
		}

		$query .= " ORDER BY ordering";

		$db->setQuery($query);
		$rows = $db->loadObjectList();
		if ($db->getErrorNum())
		{
			echo $db->stderr();
			return false;
		}

		if ($level == 0)
		{
			echo '
<div class="k2CategorySelectBlock '.$params->get('moduleclass_sfx').'">
	<form action="'.JRoute::_('index.php').'" method="get">
		<label for="category" style="font-weight:bold;font-size:12pt">Resource Guides</label></br> <!-- 12-24-2014 JMEInc, MJM, added for Sec508 compliance -->
		<select name="category" id="category" onchange="window.location=this.form.category.value;">
			<option value="'.JURI::base(true).'/">'.JText::_('K2_SELECT_CATEGORY').'</option>
			';
		}
		$indent = "";
		for ($i = 0; $i < $level; $i++)
		{
			$indent .= '&ndash; ';
		}

		foreach ($rows as $row)
		{
			if (($option == 'com_k2') && ($category == $row->id))
			{
				$selected = ' selected="selected"';
			}
			else
			{
				$selected = '';
			}
			if (modK2ToolsHelper::hasChildren($row->id))
			{
				echo '<option value="'.urldecode(JRoute::_(K2HelperRoute::getCategoryRoute($row->id.':'.urlencode($row->alias)))).'"'.$selected.'>'.$indent.$row->name.'</option>';
				modK2ToolsHelper::treeselectbox($params, $row->id, $level + 1);
			}
			else
			{
				echo '<option value="'.urldecode(JRoute::_(K2HelperRoute::getCategoryRoute($row->id.':'.urlencode($row->alias)))).'"'.$selected.'>'.$indent.$row->name.'</option>';
			}
		}

		if ($level == 0)
		{

			echo '
			</select>
			<input name="option" value="com_k2" type="hidden" />
			<input name="test" value="test" type="test" />
			<input name="view" value="itemlist" type="hidden" />
			<input name="task" value="category" type="hidden" />
			<input name="Itemid" value="'.JRequest::getInt('Itemid').'" type="hidden" />';

			// For Joom!Fish compatibility
			if (JRequest::getCmd('lang'))
			{
				echo '<input name="lang" value="'.JRequest::getCmd('lang').'" type="hidden" />';
			}

			echo '
	</form>
</div>
			';

		}
	}