Always on Top Floating Layer Pop-up

This script opens a floating layer pop-up. The advantage of this script is that viewers can work on the main window below the pop-up.

To activate the main window they will have to close or minimise the pop-up window. Additionally this layer will always hover at the spot it opens even if viewers were to scroll down the page.

Also you can adjust where this layer will hover by modifying the script. Such pop-ups usually would be activated automatically when the main page opens.