jQuery, random div order

Answer 1

var $container = $("div.container");
$container.html(shuffle($container.children().get()));

function shuffle(o){
    for(var j, x, i = o.length; i; j = parseInt(Math.random() * i), x = o[--i], o[i] = o[j], o[j] = x);
    return o;
};

Shuffle function found here

Updated: jsFiddle