I have the problem to open the PHP form inside the ligthbox but only with the Firefox and Opera (Safari, Chrome, IE, works fine).
Appear the message: "The content at "sitoweblowcost.altervista.org/PROVA/FORM.php" could not be loaded for 20 seconds."
WHY?

I'm using ligthbox 1.0.11 and DW CS6 on Mac OS 10.8.2.
You can see the page at: http://sitoweblowcost.altervista.org/PROVA/contatti.html

Thank in advance for the reply.