positionSlide: function (a) {
            var b = this.slides[a];
            b.style.width = this.slideWidth + "px", this.support.transition && (b.style.left = a * -this.slideWidth + "px", this.move(a, this.index > a ? -this.slideWidth : this.index < a ? this.slideWidth : 0, 0))
        },