Fx.Tween.Toggle
Extends Fx.Tween to store and execute toggling of the effect.
How to use
var myToggle = new Fx.Tween.Toggle('element',{
property: 'height',
from: 0,
to: 300,
link: 'cancel',
onToggle: function(){
// do stuff
}
}).setIn();
View the MooDoc for usage and examples.