/* 
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() {
	$('ul.menu ul').hide();
	$.each($('ul.menu'), 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.menu li a').click(
		function() {
			var checkElement = $(this).next();
			var parent = this.parentNode.parentNode.id;
			var slideSpeed = 1000; //speed for slide animation, ms

			//ignore this section as we aren't using 'noaccordion'
			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');
				}				
			}
			//end ignore
			
			//if we are looking at a node-contents, and they're visible, then hide them
			if((checkElement.is('ul')) && (checkElement.is(':visible'))) {
					if($('#' + parent).hasClass('collapsible')) {
					$('#' + parent + ' ul:visible').slideUp(slideSpeed);
					//$('#' + parent + ' ul:visible').slideUp('normal');
				}
				return false;
			}
			//if we're looking at node-contents and they're not visible, then show them + set cookie to current node
			if((checkElement.is('ul')) && (!checkElement.is(':visible'))) {
				$('#' + parent + ' ul:visible').slideUp(slideSpeed);
				if((String(parent).length > 0) && (String(this.className).length > 0)) {
					$.cookie(parent, this.className);
				}
				checkElement.slideDown(slideSpeed);
				return false;
			}
		}
	);
}
$(document).ready(function() { 
	initMenus();
	//External links to open in new windows
	$('A[rel="external"]').click( function() {
        window.open( $(this).attr('href') );
        return false;
    });
	/*  Code for fading the navigation menu background to a different colour.
	$('ul.menu li a[class^="m"]').hover(function() {
		$(this).stop().animate({ backgroundColor: "#36577A" }, 1);
	},function() {
		$(this).animate({ backgroundColor: "#1B2F59" }, 400);
	});
	
	$('ul.menu li ul li a').hover(function() {
		$(this).stop().animate({ backgroundColor: "#A5B9D4" }, 1);
	},function() {
		$(this).animate({ backgroundColor: "#F8FBFF" }, 400);
	});
	*/
});