function render($data)
{
$this->t->set_template('wrapper_blank.tpl');
// load body template
$this->body->set_template('kml_network_link_geolocation.tpl');
$this->body->set('params', $data['params']);
$this->body->set('site_name', $data['site_name']);
$this->body->set('site_domain', $data['site_domain']);
$this->body->set('site_description', $data['site_description']);
$this->body->set('period_label', owa_lib::get_period_label($data['params']['period']));
$this->body->set('date_label', owa_lib::getDateLabel($data['params']['period']));
$this->body->set('xml', '<?xml version="1.0" encoding="UTF-8"?>');
$this->body->set('user_name', $data['user_name']);
$this->body->set('passkey', $data['passkey']);
$this->_setLinkState();
header('Content-type: application/vnd.google-earth.kml+xml; charset=UTF-8', true);
//header('Content-type: application/keyhole', true);
}