Popup in store

[HMestre]

hi.

http://www.vinhosportimao.com/index.php?option=com_virtuemart&Itemid=158&category_id=&page=shop.browse&limitstart=0&limit=5&lang=en

this store, where it says "terms of delivery", there is a popup. Does anyone know if this is a popup plugin? and where I can edit the text that there is? I think it's not easy to figure out.

thanks