if (cap.hastranslate3d && opt.enabletranslate3d) {
        this.setScrollTop = function (val, silent) {
          self.doc.translate.y = val;
          self.doc.translate.ty = (val * -1) + "px";
          self.doc.css(cap.trstyle, "translate3d(" + self.doc.translate.tx + "," + self.doc.translate.ty + ",0)");