Randomise DIV's

Hello folks,
I’m working on a little web site that has a “home page” that consists of 100px x 100px thumbnail images that link to separate info pages. I’d like to randomise the thumbnails each time the page is loaded. But I have no idea how too. Can anyone help me out?

Thumbnail code:

<div id="holder" style="background-image: url(images/100-mini-adventures.jpg)"><div id="overlay"><a href="compass-points.html" id="link"></a></div></div>

CSS code that configures the thumbnail:

#holder {    width: 100px;    height: 100px;    -webkit-border-radius: 10px;    border-radius: 10px;    -webkit-box-shadow:  0px 0px 4px 1px #5c2b00;    box-shadow:  0px 0px 4px 1px #5c2b00;    float: left;    margin: 3px;}
#overlay {    width: 98px;    height: 98px;    background: -moz-linear-gradient(top, rgba(255,255,255,0.7) 0%, rgba(255,255,255,0) 100%);    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(255,255,255,0.7)), color-stop(100%,rgba(255,255,255,0)));    background: -webkit-linear-gradient(top, rgba(255,255,255,0.7) 0%,rgba(255,255,255,0) 100%);    background: -o-linear-gradient(top, rgba(255,255,255,0.7) 0%,rgba(255,255,255,0) 100%);    background: -ms-linear-gradient(top, rgba(255,255,255,0.7) 0%,rgba(255,255,255,0) 100%);    background: linear-gradient(to bottom, rgba(255,255,255,0.7) 0%,rgba(255,255,255,0) 100%);    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#b3ffffff', endColorstr='#00ffffff',GradientType=0 );    -webkit-border-radius: 10px;    border-radius: 10px;    border: 1px solid #FFF;}
#link {    display: block;    height: 98px;    width: 98px;}

A sample of how the thumbnails appear on the page, can be found here: http://mobile.wyldfurr.com/

So what i am trying to do, is when the page is loaded, the thumbnails might be arranged as A, B, C, D, E. But load the page again and it could be: B, E, A, C, D. Load the page again, and the boxes are jumbled up again.