Nice expanding menu

A small job.

Have a look at this webpage:

http://www.sparkyfacts.co.uk/17th-edition-course-providers.html

I need that long list to be an expanding menu list where if you click on "North West" - the list would expand with the links to the places listed.

It needs to be an easily copy-pasted script or something. I don`t care as long as I can insert it myself. (I am good with html and css)

Also, needs to be easily styled with css and to be able to hold as many entries as needed.

Thanks