如何使用nivo滑块调用滑块的一种类型

Question

我的网站正在使用带有随机动画的nivo滑块，但我不知道如何调用一种类型的动画。这是我的js：

if (settings.effect === 'random') {
    anims = new Array('sliceDownRight', 'sliceDownLeft', 'sliceUpRight', 'sliceUpLeft', 'sliceUpDown',
        'sliceUpDownLeft', 'fold', 'fade', 'boxRandom', 'boxRain', 'boxRainReverse', 'boxRainGrowReverse', 'boxRainGrow');
    currentEffect = anims[Math.floor(Math.random() * (anims.length + 1))];
    if (currentEffect === undefined) {
        currentEffect = 'fade';
    }
}

// Run random effect from specified set (eg: effect:'fold,fade')
if (settings.effect.indexOf(',') !== -1) {
    anims = settings.effect.split(',');
    currentEffect = anims[Math.floor(Math.random() * (anims.length))];
    if (currentEffect === undefined) {
        currentEffect = 'fade';
    }
}

// Custom transition as defined by "data-transition" attribute
if (vars.currentImage.attr('data-transition')) {
    currentEffect = vars.currentImage.attr('data-transition');
}

// Run effects
vars.running = true;
var timeBuff = 0,
    i = 0,
    slices = '',
    firstSlice = '',
    totalBoxes = '',
    boxes = '';

if (currentEffect === 'sliceDown' || currentEffect === 'sliceDownRight' || currentEffect === 'sliceDownLeft') {
    createSlices(slider, settings, vars);
    timeBuff = 0;
    i = 0;
    slices = $('.nivo-slice', slider);
    if (currentEffect === 'sliceDownLeft') {
        slices = $('.nivo-slice', slider)._reverse();
    }

    slices.each(function() {
        var slice = $(this);
        slice.css({
            'top': '0px'
        });
        if (i === settings.slices - 1) {
            setTimeout(function() {
                slice.animate({
                    opacity: '1.0'
                }, settings.animSpeed, '', function() {
                    slider.trigger('nivo:animFinished');
                });
            }, (100 + timeBuff));
        } else {
            setTimeout(function() {
                slice.animate({
                    opacity: '1.0'
                }, settings.animSpeed);
            }, (100 + timeBuff));
        }
        timeBuff += 50;
        i++;
    });
}

有人可以帮我解决这个问题吗？