jQuery tools scrollable doesn't handle scrolling one at a time but showing multiples, this fixes that.

scrollable_multiple_items_displayed_fix

 $('#divMonthsOuter .scrollable').scrollable({
            circular: false,
            onSeek: function (event, index) {
                var next = this.getRoot().siblings('.next');
                // the 6 here is the number of items showing
                if (this.getIndex() >= this.getSize() - 6) {
                    // Disable the Next link
                    next.addClass('disabled');
                } else {
                    next.removeClass('disabled');
                }
            },
            onBeforeSeek: function (event, index) {
                var newIndex = this.getIndex();
                // the 6 here is the number of items showing
                if (this.getIndex() >= this.getSize() - 6) {
                    if (index > newIndex) {
                        return false;
                    }
                }
            }
        });