title: How do facebook style popup windows work?
body: <p>I want to add popup windows to photo gallery. I used <a href="http://lokeshdhakar.com/projects/lightbox/" rel="nofollow">lightbox</a> before. But there is one problem I think. JQuery uploads the window without opening new page. That means that you just have one page with pictures. I think it is not good for SEO. Facebook uses another way and when you open the photo, you have new url (but with parent page in background).</p>
  
  <p>Could you explain how this stuff works? Are my thoughts about SEO right? Just for instance, I use django but I think it doesn't matter. </p>
  
  <p>Thank you in advance.</p>