File: overlay/js/Overlay.js

            /**
             * 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]);