Trac plugin for dynamically changes fields in ticket views based on simple rules.

Key features:

* Hide a field based on another field's value.
* Default a field's value per user preference.
* Clear a field's value when another field's value changes.
* Copy one field's value to another field.
* Validate a field's value.
* Set a field's value based on another field's value. 

This plugin requires JavaScript to be enabled.
