В файле catalog/controller/common/footer.php

сразу после

    protected function index() {

добавить следующий код:

	//-------------------------------------------------------------------------
	// BEGIN Magic Footer
	//-------------------------------------------------------------------------
	$this->load->model('setting/magic_footer');
	
	if($this->model_setting_magic_footer->getStatus()) {
		
	    $data = $this->model_setting_magic_footer->initMagicFooter();
	    $this->data['magic_footer'] = $data['position']; 
	    $this->data['magic_footer_theme'] = $data['theme'];
	    
	    $status = $data['status'];
	    
	    unset($data);
	    
	    if(!empty($this->data['magic_footer']) && $status != 0 ) {
		$this->document->addStyle('catalog/view/theme/default/stylesheet/magic_footer.css');
		$this->document->addStyle('catalog/view/theme/default/stylesheet/magic_footer_custom.css');

		if (file_exists(DIR_TEMPLATE . $this->config->get('config_template') . '/template/common/magic_footer.tpl')) {
		    $this->template = $this->config->get('config_template') . '/template/common/magic_footer.tpl';
		} else {
		    $this->template = 'default/template/common/magic_footer.tpl';
		}
		$this->render();
		return;
	    }
	} 
	//-------------------------------------------------------------------------
	// END Magic Footer
	//-------------------------------------------------------------------------