To get links to the accounts of visitors to my website

you Need to make a script that will allow you to find links on the page or the id of the visitors of my website in Facebook.

Implementation should occur as follows when authorized at social network user visits the site it opens a popup window with the message "You are first time on our site? and the response options Yes or No" (as here lidx.ru/ ) when you touch the screen the script detects the page of the person.