/* 
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 setHeight() {
	subHeight1 = $("#nav .selected ul").height();
	subHeight2 = $("#nav .active ul").height();
	//console.log("height1 = " + subHeight1);
	//console.log("height2 = " + subHeight2);
	
	if (subHeight1 < subHeight2) {
		subHeight = subHeight2;
	} else {
		subHeight = subHeight1;
	}
	
	$("#submenu").height(subHeight + 20);
}

function initMenus() {
	$('ul.sf-menu ul ul').hide();
	$("ul.sf-menu ul").each(function(index, element){$(element).attr("id", "submenu"+index).attr("class", "collapsible");});
	$.each($('ul.sf-menu ul'), function(){
		$('#' + this.id + '.expandfirst ul:first').show();
		$('.selected ul:first').show();
		$('.collapsible .active ul:first').show();
	});
	$('ul.sf-menu ul li a').mouseover(
		function() {
			var checkElement = $(this).next();
			var parent = this.parentNode.parentNode.id;

			if($('#' + parent).hasClass('noaccordion')) {
				$(this).next().slideToggle('normal');
				return false;
			}
			if((checkElement.is('ul')) && (checkElement.is(':visible'))) {
				if($('#' + parent).hasClass('collapsible')) {
					$('#' + parent + ' ul:visible').slideUp('normal', function(){
						setHeight();
					});
				}
				return false;
			}
			if((checkElement.is('ul')) && (!checkElement.is(':visible'))) {
				$('#' + parent + ' ul:visible').slideUp('normal', function(){
					setHeight();
				});
				checkElement.slideDown('normal', function(){
					setHeight();
				});
				return false;
			}
		}
	);
}
$(document).ready(function() {initMenus();});