complete = function() {

                self._layers[index].innerHTML = self.getData().layer || '';

                self.trigger($.extend(evObj, {
                    type: Galleria.LOADFINISH
                }));
                self._playCheck();
            }
Shows an image by index

        @param {number|boolean} index The index to show
        @param {Boolean} rewind A boolean that should be true if you want the transition to go back

        @returns Instance