The JSON value of the
[up-accept] attribute becomes the overlay's
<a href='/dashboard' up-dismiss>Close</a>
[href] will only be followed when this link is clicked in the root layer.
In an overlay the
click event's default action is prevented.
You can also omit the
[href] attribute to make a link that only works in overlays.
The overlay's dismissal value as a JSON string.
A message the user needs to confirm before the layer is closed.
The overlay's close animation.
Defaults to overlay's preconfigured close animation.
The close animation's duration in milliseconds.
The close animation's easing function.