248   duration:   1.0,   // seconds  property in Effect.DefaultOptions
265     this.finishOn     = this.startOn + (this.options.duration*1000);
282       var frame = Math.round(pos * this.options.fps * this.options.duration);
348       duration: 0
594      Object.extend({ duration: 1.0, 
640     duration: 0.4,
645         duration: 0.3, scaleFromCenter: true,
668       { duration: 0.5,
684       { x:  20, y: 0, duration: 0.05, afterFinishInternal: function(effect) {
686       { x: -40, y: 0, duration: 0.1,  afterFinishInternal: function(effect) {
688       { x:  40, y: 0, duration: 0.1,  afterFinishInternal: function(effect) {
690       { x: -40, y: 0, duration: 0.1,  afterFinishInternal: function(effect) {
692       { x:  40, y: 0, duration: 0.1,  afterFinishInternal: function(effect) {
694       { x: -20, y: 0, duration: 0.05, afterFinishInternal: function(effect) {
817     duration: 0.01, 
903     Object.extend(Object.extend({  duration: 2.0, from: 0,