pager.background ype: string
Default value: "off"
There are 3 modes for pager background: "off", "white" and "dark". By default, there is no background!
In this example, the pager of the left is hidden while the transition of the images is active, at the same time, the other pager is visible all the time!
Important: Note that an object embedded is necessary to handle the pager options!