I\'m having some trouble with finding the visibility param for JQuery.
Basically... the code below does nothing.
$(\'ul.load_details\').animate({
Maybe you are just looking to show or hide an element:
$('ul.load_details').show();
$('ul.load_details').hide();
Or do you want to show/hide element using animation (this doesn't make sense of course as it will not fade):
$('ul.load_details').animate({opacity:"show"});
$('ul.load_details').animate({opacity:"hide"});
Or do you want to really fade-in the element like this:
$('ul.load_details').animate({opacity:1});
$('ul.load_details').animate({opacity:0});
Maybe a nice tutorial will help you get up to speed with jQuery:
http://www.webdesignerwall.com/tutorials/jquery-tutorials-for-designers/