verticalMargin

// Property: verticalMargin
// Description: Vertical placement of the notifcation, as a fraction of the screen height.
// Component(s): Ti.UI.Notification
'.vertical-margin-top': { verticalMargin: -0.5 }
'.vertical-margin-bottom': { verticalMargin: 0.5 }
'.vertical-margin-middle': { verticalMargin: 0 }