document.documentElement.className = 'js';
Demo - atipso
Here you can see our live previews
A fully page build with atipso.
We know when a visitor is about to exit the website and are able to open such an automated popup (lightbox).
This window appears automated based on time and scrolling depth.
You can control a button right within atipso.
Each page / app built with atipso has its own embed-code which will automatically resize based on height and width.