Gives the illusion of the element puffing away (like a in a cloud of smoke).
script.aculo.us V1.0 and later.
Effect.Puff('id_of_element');
// with options
Effect.Puff('id_of_element', {duration:3});
Click for Effect.Puff demo
Items in bold are default values.
Works safely with most Block Elements, except tables.