Is there some way to arbitrarily set the active trail? I have a menu as such:


Home
Performances
News
Learning
...


I have a content type called 'Event' and when viewing a node of the event type I want to set the 'Performances' menu item as active. How would I go about doing this?

menu_set_active_trail() doesn't seem to work :s
If you're using Drupal 7.9 or later you can use the menu_tree_set_path() function, e.g.

menu_tree_set_path('main-menu', 'performances');