/* 
Simple JQuery menu.
HTML structure to use:

Notes: 

1: each menu MUST have an ID set. It doesn't matter what this ID is as long as it's there.
2: each menu MUST have a class 'menu' set. If the menu doesn't have this, the JS won't make it dynamic

Optional extra classnames:

noaccordion : no accordion functionality
collapsible : menu works like an accordion but can be fully collapsed
expandfirst : first menu item expanded at page load

<ul id="menu1" class="menu [optional class] [optional class]">
<li><a href="#">Sub menu heading</a>
<ul>
<li><a href="http://site.com/">Link</a></li>
<li><a href="http://site.com/">Link</a></li>
<li><a href="http://site.com/">Link</a></li>
...
...
</ul>
<li><a href="#">Sub menu heading</a>
<ul>
<li><a href="http://site.com/">Link</a></li>
<li><a href="http://site.com/">Link</a></li>
<li><a href="http://site.com/">Link</a></li>
...
...
</ul>
...
...
</ul>

Copyright 2008 by Marco van Hylckama Vlieg

web: http://www.i-marco.nl/weblog/
email: marco@i-marco.nl

Free for non-commercial use
*/

function initMenus() {
	$('#nav ul.nav ul').hide();
	$.each($('ul.nav'), function(){
		var cookie = $.cookie(this.id);
		if(cookie === null || String(cookie).length < 1) {
			$('#' + this.id + '.expandfirst ul:first').show();
		}
		else {			
			$('#' + this.id + ' .' + cookie).next().show();

        }
    });
	
	$('ul.nav li a').click(
		function() {

			var checkElement = $(this).next();
			var parent = this.parentNode.parentNode.id;

			if($('#' + parent).hasClass('noaccordion')) {
				if((String(parent).length > 0) && (String(this.className).length > 0)) {
					if($(this).next().is(':visible')) {
						$.cookie(parent, null);
					}
					else {
						$.cookie(parent, this.className);
					}
					$(this).next().slideToggle('normal');
				}				
			}
			if((checkElement.is('ul')) && (checkElement.is(':visible'))) {
				if($('#' + parent).hasClass('collapsible')) {
					$('#' + parent + ' ul:visible').slideUp('normal');
				}
				else{
					checkElement.slideUp('normal');				
				}
				return false;
			}
			if((checkElement.is('ul')) && (!checkElement.is(':visible'))) {
				$('#' + parent + ' ul:visible').slideUp('normal');
				if((String(parent).length > 0) && (String(this.className).length > 0)) {
					$.cookie(parent, this.className);
				}
				checkElement.slideDown('normal');
				return false;
			}
		}
	).each(function() {
	    //open menu and highlight current section
		//check current url starts with menu item url, allows for sub sections
		if (location.href.replace('#','').match("^" + this.href) == this.href) {
	    //if (this.href == location.href) {
	        //open parent
	        $('#' + this.parentNode.parentNode.parentNode.id + ' ul').slideDown('normal');
	        //select self
	        $(this).addClass("selected");
	    }
	});  
}
$(document).ready(function() {initMenus();});