Load page content in another page

Take a look at the signup sectio开发者_运维百科n over here:

http://www.istockphoto.com/istock_login

Can you explain me please how can that moving box have been created? Thank you

I believe if what your talking about is the box that shows up when you click on the login but, that is called lightbox. It's Javascript & Jquery that gets whatever content you want and makes a "frame" that overlays the rest of your page. There are lots of pre-made plugins witch if you want to replicate that effect I would sugest you to use because they are simple and easy.

http://www.fancybox.net/
http://www.lightbox.com.br/
http://www.lokeshdhakar.com/projects/lightbox2/
http://jquery.com/demo/thickbox/
http://www.shadowbox-js.com/