YUI-通话功能

Question

我正在使用Squarespace并具有幻灯片显示，我需要以编程方式更改幻灯片。我正在尝试通过编写访问YUI模块然后运行此函数的函数来做到这一点：

next: function() {
  this._slideshow.nextSlide()
},

完整代码：

YUI.add("squarespace-widgets-lightbox2", function(e) {
  e.namespace("Squarespace.Widgets"),
    e.Squarespace.Widgets.Lightbox2 = e.Squarespace.Lightbox2 = e.Base.create("Lightbox2", e.Squarespace.Widgets.Gismo, [], {
        initializer: function() {
          e.config.win.ACTIVE_LIGHTBOX = this,
            this._overlay = new e.Squarespace.Lightbox2Overlay({
              theme: this.get("theme")
            }),
            this._overlay.on("hide", this.hideAndDestroy, this),
            this.bMobile = e.SQS.Gallery.Manager.isMobile(),
            this.requestUpdateHeightAndRefresh = i(this.updateHeightAndRefresh.bind(this))

        },
        //removed irrelevant code for example
        previous: function() {
          this._slideshow.previousSlide()
        },
        next: function() {
          this._slideshow.nextSlide()
        },

如果有人能够提供帮助，我将永远感激不已！