(function($) {

$.fn.randomize = function(childElem) {
  return this.each(function() {
      var $this = $(this);
      var elems = $this.children(childElem);

      elems.sort(function() { return (Math.round(Math.random())-0.5); });  

      $this.remove(childElem);  

      for(var i=0; i < elems.length; i++)
        $this.append(elems[i]);      

  });    
}
  
jQuery.fn.idle = function(time)
{ 
    var o = $(this); 
    o.queue(function()
    { 
       setTimeout(function()
       { 
          o.dequeue(); 
       }, time);
    });
};
  
  
})(jQuery);