关于javascript脚本调用出错的问题

我在wiindows下的TestJavaScript例子的js代码中加了这样的代码:

var ActionManagerTest = cc.Layer.extend({
init:function()
{
this._super();
var s1 = cc.Sprite.create(“grossini_dance_05.png”);
s1.position = cc.Point.create(winSize.width / 2 + 50, winSize.height / 2);
var s2 = cc.Sprite.create(“grossinis_sister1.png”);
s2.position = cc.Point.create(winSize.width / 2 - 50, winSize.height / 2);
var moveTo = new cc.MoveTo();
moveTo.initWithDuration(2.0, cc.Point.create(winSize.width, winSize.height / 2));
var moveBy = new cc.MoveBy();
moveBy.initWithDuration(2.0, cc.Point.create(100, 100));
s1.runAction(moveTo);
s2.runAction(moveBy);
this.addChild(s1);
this.addChild(s2);
},
onEnter:function () {
this._super();
}
});

不知道错误在哪儿??
在html5中支持extend类似继承的用法,在native中直接调用js
中是否支持这样的用法??
我看到native调用js的例子中,没有extend的用法?不知道是否可以用?