collapsible

Categories field is collapsed by default when creating new forum topics.

In Drupal core forum (when there is more than one vocabulary assigned to the forum content type) creating a new forum topic causes the categories field to appear collapsed by default.

See attached pics.

This is not very user friendly - especially since category is a required element. Typically the user will miss the field altogether and submit a forum post only to receive a red box warning - somewhat ironically around the now visible category field.

I figured my first attempt at a custom and hopefully contributed module should be something that is simple and usable, while a little bit challenging.

I love the simplicity of the FAPI collapsible fieldset but I was disappointed that it didn't remember whether I wanted it to be collapsed or open. So this is my attempt at fixing that problem.