smarty - How to add JS and CSS files to all FrontOfice content in Prestashop 1.6 -

what best way add js , css files prestashop 1.6? want files available on pages in frontoffice.

best way create module , add them in hookheader():

public function hookheader() {     $this->context->controller->addcss($this->_path.'views/css/stylesheet.css', 'all');     $this->context->controller->addjs($this->_path.'views/css/script.js'); }