var advertisement_list;
var advertisement_index = 0;

var advertisementTransition = function() {
	advertisement_list.children('a:eq('+advertisement_index+')').fadeOut('slow');
	advertisement_index = ( advertisement_index + 1 ) % advertisement_list.children('a').size();
	advertisement_list.children('a:eq('+advertisement_index+')').fadeIn('slow');
};

jQuery(document).ready(function() {
	advertisement_list = jQuery('.advertisement_list');
	if ( advertisement_list.children('a').size() > 1 ) {
		advertisement_list.children('a:gt(0)').fadeOut(0);
		setInterval( advertisementTransition, 6000 );
	}
});