var Topic = { 
  init : function() {
    Fenster.init_small();
		new Effect.Appear('disc_bg', { duration: 1.0, from: 1.0, to: 0.7 });
		new Effect.Appear('imp_bg', { duration: 1.0, from: 1.0, to: 0.7 });
  }
}

YAHOO.util.Event.addListener(window, 'load', Topic.init);