org.richfaces.NotifyStack org.richfaces.NotifyStack org.richfaces.component.html.HtmlNotifyStack org.richfaces.component.UINotifyStack org.richfaces.NotifyStackRenderer org.richfaces.renderkit.html.NotifyStackRenderer notifyStack org.richfaces.taglib.NotifyStackTag org.ajax4jsf.webapp.taglib.HtmlComponentTagBase &ui_component_attributes; verticalStackingDirection java.lang.String horizontalStackingDirection java.lang.String push java.lang.String Stack end from which message should be pushed. Acceptable values: "up","down" styleClass java.lang.String