/**
* Provides a basic Overlay widget, with Standard Module content support. The Overlay widget
* provides Page XY positioning support, alignment and centering support along with basic
* stackable support (z-index and shimming).
*
* @module overlay
*/
/**
* A basic Overlay Widget, which can be positioned based on Page XY co-ordinates and is stackable (z-index support).
* It also provides alignment and centering support and uses a standard module format for it's content, with header,
* body and footer section support.
*
* @class Overlay
* @constructor
* @extends Widget
* @uses WidgetStdMod
* @uses WidgetPosition
* @uses WidgetStack
* @uses WidgetPositionAlign
* @uses WidgetPositionConstrain
* @param {Object} object The user configuration for the instance.
*/
Y.Overlay = Y.Base.create("overlay", Y.Widget, [Y.WidgetStdMod, Y.WidgetPosition, Y.WidgetStack, Y.WidgetPositionAlign, Y.WidgetPositionConstrain]);