Check connectivity every interval.
responsive_draw.js + carousel.js to enable tiles to pop into next slide when viewport size is reduced.
Less code :)
Mark's easy easing
Supported in IE8+
Making random more organic.
Using this method no cookies are created by Facebook.
Note: a html file simply featuring window.close(); needs to exist on the server to close the panel on success. Reference the correct path in the redirect_uri attribute.