Image rotator script

[Matt Thomson]

Hi this is my first week with mootools and I am having a few teething
problems, Thanks if you can give me a hand, this is what I would like
to do:

window.addEvent('domready', function()
{
        (function fade_out()
    {
        var myEffect = new Fx.Tween($('rImage'),
        {
            property: 'opacity',
            duration: 1000
        });
        myEffect.start(100, 0);

    }).delay(3000);

    (function image_swap()
    {
        document.getElementById('rImage').src= image_src_array[i];
        i++;

    }).delay(3950);

    (function fade_in()
    {
        var myEffect1 = new Fx.Tween($('rImage'),
        {
            property: 'opacity',
            duration: 1000
        });
        myEffect1.start(0, 100);

    }).delay(4000);

});
Ultimately I would like to get the whole thing inside
a .periodical(5000) but I want to get this going first. The tween will
not happen naturally, just quickly flashes from 100 opacity to 0
opacity, I am guessing this is to do with the timeout as I don't have
any problems tweening in real time,

Thanks,

Matt.