function gcc_event_node_view($node, $build_mode = 'full') {
if ($node->type !== 'eventlist') {
    return;
}
if (have replacement html) {
    $node->content['body'][0]['#markup'] = "new stuff";
} else if (use pdf) {
    header('Content-type: application/pdf');
    header('Content-length: ' . filesize($fullPath));
    header('Content-Disposition: filename=' . $this->ShortName() . $file);
    readfile($fullPath);
   // need something here to make the node not render further at all
}