make a div work as a popup

Question

I am designing a simple webpage. I want to display a popup window in the same page just like the image attached below.

Answer 1

In a very simple way you can do it keep z-index property in css of div and do hide and show of that div based on actions use this http://jsfiddle.net/b68Xb/327/

 
       
This is the main content. To display a lightbox click here
        
This is the lightbox content. Close