$(function() {
	$('.description:parent').closest('.head').each(function() {
		var head = $(this);
		var description = head.find('.description');
		var about = $('<a href="javascript:void(0);" class="about">about</a>');
		description.before(about);
		about.click(function() {
			if (!head.hasClass('expanded')) {
				description.slideDown();
				head.addClass('expanded');
			} else {
				description.slideUp();
				head.removeClass('expanded');
			}
		});
	});
});