script.aculo.us---Effect.Scale

This effect changes an elements width and height dimensions and the base for em units. This allows for smooth, automatic relative scaling of elements contained within the scaled element.

此效果基于em单位改变元素的宽度和高度尺寸。允许平滑的自动的缩放元素。

用法 ：new Effect.Scale('id_of_element', percent, [options]);
  new Effect.Scale(element, percent, [options]);

Effect-specific parameters

可选参数

Option Description
scaleX Sets whether the element should be scaled horizontally, defaults to true.
scaleY Sets whether the element should be scaled vertically, defaults to true.
scaleContent Sets whether content scaling should be enabled, defaults to true.
scaleFromCenter If true, scale the element in a way that the center of the element stays on the same position on the screen, defaults to false.
scaleMode Either ‘box’ (default, scales the visible area of the element) or ‘contents’ (scales the complete element, that is parts normally only visible byscrolling are taken into account). You can also precisely control the size the element will become by assigning the originalHeight and originalWidth variables to scaleMode as follows:
scaleMode: { originalHeight: 400, originalWidth: 200 }
scaleFrom Sets the starting percentage for scaling, defaults to 100.0.

http://wiki.script.aculo.us/scriptaculous/show/Effect.Scale