config.maxScroll = $('.scroll-x table').outerWidth() - $('.scroll-x').outerWidth();    config.speed = 30;    $('.scroll-x')[0] ? $('.scroll-x')[0].onmousewheel = function(event) {        if($(this).width() == $(this).find('table').width()){            return;        };        var event = event ? event : window.event;        var dir = event.wheelDelta;        var k = event.wheelDelta ? event.wheelDelta : -event.detail * 10;        $(this)[0].scrollTop = $(this)[0].scrollTop - k;        if (dir > 0) { // 向右            config.tableScroll += config.speed;            if (config.tableScroll >= config.maxScroll) {                config.tableScroll = config.maxScroll;            }        } else { // 向左            config.tableScroll -= config.speed;            if (config.tableScroll <= 0) {                config.tableScroll = 0;            }        }        $(this).scrollLeft(config.tableScroll);        return false;    } : '';    $('.scroll_speed').click(function() {        $(this).addClass('btn-primary');        $(this).siblings('.scroll_speed').removeClass('btn-primary')        config.speed = $(this).data('speed') ? $(this).data('speed') : config.speed;    });