How to make facebook like button for different pages, I get button for site.com and i'm in

site.compage?product=1 - page and if somebody like the thing on that page, it will output to the post page in facebook that the person liked site.com, how to make that way so if user likes some page to show the current page not the page that I added in the like button generator, so if user is on

site.com/page?product=2 and hit the like button , I want on his facebook page to have that he liked site.com/page?product=2 so every page on the site where is the button I want to be like that.

Originally asked by: user639285 on Stack Overflow