jquery move elements into a random order

I am attempting to display a series of images in a random order. However, I do not want any single item to repeat until all items have been shown, so instead of selecting a random image from the array, I want to take the entire array, randomize it, and then select in sequence from the first to the last element. Here's my code:

HTML:

<div id="tout4"
<img src="images/gallery01.jpg" class="img_lg"/>
<img src="images/gallery02.jpg" class="img_lg"/>
<img src="images/gallery03.jpg" class="img_lg"/>
</div>

and the javascript, which currently selects and displays the items in order:

var galleryLength = $('#tout4 img.img_lg').length;
var currentGallery = 0;
setInterval(cycleGallery, 5000);


function cycleGallery(){

    $('#tout4 img.img_lg').eq(currentGallery).fadeOut(300);

    if (currentGallery < (galleryLength-1)){
        currentGallery++;
    } else {
        currentGallery = 0;
    }

    $('#tout4 img.img_lg').eq(currentGallery).fadeIn(300);
}

So how do I rearrange the actual order of the images, and not just the order in which they are selected?