OpacityTween.prototype=new Tween();OpacityTween.prototype.constructor=Tween;OpacityTween.superclass=Tween.prototype;function OpacityTween(obj,func,fromOpacity,toOpacity,duration){this.targetObject=obj;this.init(new Object(),'x',func,fromOpacity,toOpacity,duration);}var o=OpacityTween.prototype;o.targetObject={};o.onMotionChanged=function(evt){var v=evt.target._pos;var t=this.targetObject;t.style['opacity']=v/100;t.style['-moz-opacity']=v/100;if(t.filters)t.filters.alpha['opacity']=v;};