Method loadSpec

public function loadSpec()
{
    // should be loaded as last because they overwrite base
    if ($this->p['load_spec_css'] != '') {
        //JHtml::stylesheet('media/com_phocacart/css/spec/'.htmlspecialchars(strip_tags($this->p['load_spec_css'])).'.css');
        // HTMLHelper::_('stylesheet', 'media/com_phocacart/css/spec/' . htmlspecialchars(strip_tags($this->p['load_spec_css'])) . '.css', array('version' => 'auto'));
        $this->wa->registerAndUseStyle('com_phocacart.spec_css', 'media/com_phocacart/css/spec/' . htmlspecialchars(strip_tags($this->p['load_spec_css'])) . '.css', array('version' => 'auto'));
    }
    if ($this->p['load_rtl_css'] == 1) {
        //JHtml::stylesheet('media/com_phocacart/css/spec/rtl.css');
        //HTMLHelper::_('stylesheet', 'media/com_phocacart/css/spec/rtl.css', array('version' => 'auto'));
        $this->wa->registerAndUseStyle('com_phocacart.rtl', 'media/com_phocacart/css/spec/rtl.css', array('version' => 'auto'));
    }
}