JavaScript in information pages - CMS

[zazi]

Hi,

I am new and not so familiar with prestashop. I use version 1.2.5

I would appreciate some help about information pages. I use the CMS to put a legal document. But it is very long.
So I would like to use some external javascript (colapsible pannels), for each main headlines in this document. So each headline tekst would be disclosed only when you click it.

Does anybody know how to manage this? I allready tried in many ways but it seems javascript does not work.
Exist maybe some modul for this?

Thank you for your help.