How to create a pop-up (ease-in) fixed header

Question

I am talking about the fixed header you get in your facebook profile page. Once you scroll to the end of the cover picture, you get a secondary header bar which then becomes fixed till you scroll above the cover image.

Is there any name for this? Also, how do I go about creating a prototype for this interaction?

Answer 1

They are called Sticky Headers and Sticky Footers

Look at the following links

• link 1
• link 2
• link 3