having problem about displaying somthing in hikashop in a new template

if(!$this->module){
	// If $params->hk_product > use the menu settings
	$data = $this->params->get('data');
	if(isset($data->hk_product) && is_object($data->hk_product)){
		$js = '';
		$empty='';
		jimport('joomla.html.parameter');
		$params = new HikaParameter($empty);
		foreach($data->hk_product as $k => $v){
			$params->set($k,$v);
		}
		$main_div_name = 'hikashop_category_information_module_'.$params->get('id');
		$params->set('main_div_name',$main_div_name);
		echo '<div class="hikashop_submodules" style="clear:both">'.hikashop_getLayout('product', 'listing', $params, $js).'</div>';
	}
	// Else use the default module system
	else if(!empty($this->modules)){
		$html = '';
		jimport('joomla.application.module.helper');
		foreach($this->modules as $module){
			$html .= JModuleHelper::renderModule($module);
		}
		if(!empty($html)){
			echo '<div class="hikashop_submodules" style="clear:both">'.$html.'</div>';
		}
			//display the modules:
				//all products with pagination
				//random products
				//best sellers
				//new products
				//best reviewed
	}
}