Not sure if this will be useful to you, but the alternative to a JS solution is to hack into core. You can insert the below code into lib-common.php (at line 592 in geeklog 1.7.2).
Text Formatted Code
if (true) {
$_CONF['menu_elements'] = array('plugins');
$plugin_menu = array('birds' => $_CONF['site_url'] . '/birds/index.html',
'bees' => $_CONF['site_url'] . '/bees/index.html');
}
Of course, you will need to replace the "always true" condition with something that will tell you whether you are on your cool plugin's page or not.
Rouslan