The options of animation.

The duration of the animation in milliseconds.

Default: 200

The easing option uses Raphael easing formulas to add effects to the animation, such as allowing an item to bounce realistically. For more information, please see Easing in the Animation topic.

Default: "linear"

The animation effect that is used when the wijtree is collapsed. Please see the Animation Effects topic for a list of the available animation effects.

Default: "blind"