Post to FB wall and other social media

Hi there,
On my site (www.linaukis.com), on portfolio items pages (ex.: http://www.linaukis.com/portfolio-item/grocery-coffee-photoshoot) I would like to give the user an ability to share the work on FB, Twitter and Pinterest.
Basically, I would like to insert the “icon” element from the Enfold Theme and make it link to a pop-up that allows a user to share that post on the above-mentioned Social Media.
I don’t need to functionality to show how many people have shared it, or liked it.
An example can been seen here: http://www.lovelybooks.de/autor/Helga-Hegewisch/ (on the right side of the screen).
I have already achieved the sharing screen to appear as a new window by clicking on on FB icon, but I would like it to appear as a pop-up, instead of a new window.
Do I need to download a plug-in for that, or just insert a URL in the icon tool?

thanks for your help!