$(function() {
	(function($) {

		$.fn.accordion = function(custom) {
			var defaults = {
				keepOpen: false,
				startingOpen: false
			}
			var settings = $.extend({}, defaults, custom);
			if (settings.startingOpen) {
				$(settings.startingOpen).show();
				$("#open1").show();
				$("#open2").show();
				$("#open3").show();
				$("#open4").show();				
			}

			return this.each(function() {
				var obj = $(this);
				$('li a', obj).click(function(event) {
					var elem = $(this).next();
					if (elem.is('ul')) {
						event.preventDefault();
						if (!settings.keepOpen) {
							obj.find('ul:visible').not(elem).not(elem.parents('ul:visible')).slideUp();
						}
						elem.slideToggle();
					}
				});
			});
		};
	})(jQuery);

	$('#menu').accordion({keepOpen:false, startingOpen: '#open'});
});