The Facebook Like button lets a user share your content with friends on Facebook. When the user clicks the Like button on your site, a story appears in the user's friends' News Feed with a link back to your website.
for full documentation see
developers.facebook.comNOTE:
include_common_js
If you have more than one Facebook widget on the page set this to false for the second and subsequent widgets
Set your own language code in "language"
Facebook language codesTo use the current domain set domain = current
