Q:

How can I determine if page is being viewed through lightbox?

I have several sites I'm working on that are loading sub-pages via lightbox. The actual content is being found by Google, but the pages are hideous as they aren't meant to load all the headers and whatnot - this is content intended for lightbox delivery (ajax, fancybox).
In PHP, or javascript if necessary, how might I determine if the content is being viewed in a lightbox or not? Would be nice to throw up a "view the original page" link or something.

A:

lightbox like every other similar lib use AJAX for pulling content ... am not sure sure if you can detect if it is a standard jquery or moottools or lightbox because they all you the same technology 
What you can do is detect if your page is been called via AJAX
function isAjax() {
    return (isset($_SERVER['HTTP_X_REQUESTED_WITH']) && $_SERVER['HTTP_X_REQUESTED_WITH']=="XMLHttpRequest");
}

if(isAjax())
{
    die("Don't Use AJAX");
}
else
{
    echo "WELCOME" ;
}

A:

Lightboxes often use iframes to display external pages. If this is the case (you can inspect the Lightbox using Firebug to check this), you can use window.top on JavaScript to check this.
if (window.top.location != window.location) {
    //this page is inside a frame or iframe
}

