Bootstrap Modal Date-range Picker Single Picker Month & Years Drop Down & Text area height Problem On Firefox

 //Textarea Design Problem on Firefox Fix
    var FF = !(window.mozInnerScreenX == null);
    if (FF) {
        $('textarea[rows]').each(function (i, el) {
            if (!$(el).data('ffRowsFixed')) {
                var rows = parseInt($(el).attr('rows'));
                if (rows > 1) {
                    $(el).attr('rows', (rows - 1));
                }
                $(el).data('ffRowsFixed', true);
            }
        });
        //Modal in date Picker Drop Down issue on Firefox Fix
        $('.modal').on('show.bs.modal', function () {
            $.fn.modal.Constructor.prototype.enforceFocus = function () { };
        });
    }