Thumbnails for Facebook (Featured Images)

I have problem with thumb pictures when sharing on facebook. Why can’t I select pictures that I will place on facebook insted header (paro of) image is selected??

Example:
http://www.crofutsal.com/2hmnl/2hmnl-istok/2-hmnl-istok-6-kolo-najava-3/

Hi there,

In order to select which image to use when your users share to Facebook, you should set up your open graph meta tags, which tells Facebook and other social networks which image, title, description, etc… to show in their link previews.

Take a look at this guide for reference:
http://ogp.me/

Also, there are a bunch of WordPress plugins that will add this in automatically for you:
http://wordpress.org/plugins/tags/open-graph

And a handy debugging tool from Facebook so you can see what they see when they visit your website:
https://developers.facebook.com/tools/debug

Sincerely,

Andy Huang
Shareaholic Support