 
     @el.classList.add elClasses.active
     showEl @_stages.left
-    @cloneEl = cloneEl @el, true, 'clone'
-    @cloneEl.classList.remove elClasses.active
-    hideEl @cloneEl
+    @_cloneEl = cloneEl @el, true, 'clone'
+    @_cloneEl.classList.remove elClasses.active
+    hideEl @_cloneEl
     @el.innerHTML   = ''
-    @el.appendChild @cloneEl
+    @el.appendChild @_cloneEl
     @el.appendChild @_stageHolder
     @$el = $ @el if $
     @accordion 0

        @isFrozen = true
        # Swap the visibility of the elements.
        hideEl @_stageHolder
        showEl @cloneEl
        @_setCursor false
        callback?()
    @

    if @isFrozen
      @isFrozen = false
      # Swap the visibility of the elements.
      hideEl @_cloneEl
      showEl @_stageHolder
      @_setCursor()
      # Set `lastAngle` to 0 so an immediately subsequent call to `freeze` triggers the callback.
