FacesContext context = FacesContext.getCurrentInstance();

        ViewHandler viewHandler = context.getApplication().getViewHandler();

        UIViewRoot dialog = 
            viewHandler.createView(context, "/dialogs/adf_error.jsp");
        HashMap properties =  new  HashMap();
        properties.put("width",  new  Integer( 400 ));
        properties.put("height",  new  Integer( 400 ));

        AdfFacesContext afContext = 
            AdfFacesContext.getCurrentInstance(); 
            
            afContext.launchDialog(dialog, getParameters(),  null , true, properties);