Showing random divs using Jquery

Question

I have a list if divs which contain images. I need to randomly show 4 of these each time the page loads. Here\'s the code I\'m starting with.

Answer 1

jQuery(function($){
  var sortByN = function(a,b){ a=a.n; b=b.n; return ab?1:0 };
  $.each( $('div.Image').map(
    function(){ return { div:this, n:Math.random() }; }
  ).get().sort(sortByN), function(i){
    if (i<4) $(this.div).show();
  });
});

Note that this will always show the divs in the same order as the original. Is that acceptable?