Facebook content locker for blogger

Hello, i have came across 2 sites that use a similar method: the one is using wordpress paid hosting, and the other blogger. But what they have in common, is a facebook "like to see" button that is customizable with background picture... i did a research but i couldnt find exactly what type of script is (i think its javascript) i would to find more about it if anyone has a solution thank you.

website examples: wordpress: http://www.piperata.com/30366/
blogger: http://fb-news-eu.blogspot.com/2013/05/blog-post_6595.html

you can edit html codes in blogger / wordpress / tumblr... or any other blog making machine too..

Grey Hat said:

you can edit html codes in blogger / wordpress / tumblr... or any other blog making machine too..

Click to expand...

well i know that but what i dont know, is the exact script that these specific websites use

i want this as well