Reset or change slides array of jQuery plugin

I'm using the supersized plugin for jQuery to show fullsize background pictures. I want to change the array with the images (with jquery.click()), but without reloading the page. The link loads the content into a div via AJAX, and at the same time I want to switch the array.

This is the default code I load for supersized:

$.supersized({
    random: 1,
    image_protect: 0,
    slide_interval: 5000,
    transition: 1,
    transition_speed: 3000,
    vertical_center: 0,
    horizontal_center: 0,
    fit_portrait: 1,
    slides:
    [
        {image : 'imgs/bg-01.jpg'},
        {image : 'imgs/bg-02.jpg'},
        {image : 'imgs/bg-03.jpg'},
    ]
});

This is what I've done to change the array:

$('#link1').click(function() {
    // placeholder for ajax load

    $.supersized({
        random: 1,
        image_protect: 0,
        slide_interval: 5000,
        transition: 1,
        transition_speed: 3000,
        vertical_center: 0,
        horizontal_center: 0,
        fit_portrait: 1,
        slides:
        [
            {image : 'other-imgs/new-bg-01.jpg'},
            {image : 'other-imgs/new-bg-02.jpg'}
        ]
    });
});

but this only adds the 2 new images to the other 3. How can I clear the first array and/or replace the content of it?