Greybox Redux (Reworked)

Reworked original greybox redux at http://jquery.com/demo/grey/

See it in action:

• Launch Google (Overlay not clickable)
• Visit Yahoo (Overlay clickable)
• Microsoft would like a visit. (overlay clickable, animated)
• jQuery Rocks! (Overlay not-clickable, callback alert)
• jQuery Rocks! (Overlay not-clickable, callback alert, firefox only: greybox overflow set to hidden)