Contextual Custom fields based on Type field

We have a number of Different Types of Tickets we raise, ie

• Classification = Problem, Incident, Request, Internal
• Types = Enhancement, Support, Deployment, etc

We have implemented a custom field called "Done Criteria", which has a list of checkboxes to mark as complete as the job progresses. 
The Done Criteria checklist for an Enhancement is different from the Checklist for a Support Done criteria so currently we cut/paste the correct list into this field.
Can we have a different custom field displayed in a job/ Ticket depending on the Type? ie if type = Enhancement, then display custom field "Enhancement Done Criteria" 
but 
if Type = Support, then display the Custom field "Support Done Criteria"

how do I do this?

thanks

Mick