Links in a page moving content

Hi! I have a page that i would like to have two links on. When i click the second link, i want the second part of the content to slide in/appear, see this page: johannesp.se

See my page on: http://stilius.se/wilink/store/products/category/stockholm_nacka_tullen_ica/?cat=41

What is the easiest way to do this?