function plugin($name, $data)
{
if ($name != 'mathpublish' && $name != 'ditaa') {
return parent::plugin($name, $data);
}
$mode = 'xhtml';
$renderer = p_get_renderer($mode);
$plugin =& plugin_load('syntax', $name);
if ($plugin != null) {
$plugin->render($mode, $renderer, $data);
if ($name == 'ditaa') {
epub_check_for_ditaa($renderer->doc, $this);
} else {
if ($name == 'mathpublish') {
epub_check_for_math($renderer->doc, $this);
}
}
$this->doc .= $renderer->doc;
}
}