/* 
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(){
		$('#' + this.id + '.expandfirst ul:first').show();
	});
	$('ul.menu li a').click(
		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');
				}
				return false;
			}
			if((checkElement.is('ul')) && (!checkElement.is(':visible'))) {
				$('#' + parent + ' ul:visible').slideUp('normal');
				checkElement.slideDown('normal');
				return false;
			}
		}
	);
}
$(document).ready(function() {initMenus();});

*/

jQuery.fn.initMenu = function() {  
    return this.each(function(){
        var theMenu = $(this).get(0);
        $('.acitem', this).hide();
        $('li.expand > .acitem', this).show();
        $('li.expand > .acitem', this).prev().addClass('active');
        $('li a', this).click(
            function(e) {
                e.stopImmediatePropagation();
                var theElement = $(this).next();
                var parent = this.parentNode.parentNode;
                if($(parent).hasClass('noaccordion')) {
                    if(theElement[0] === undefined) {
                        window.location.href = this.href;
                    }
                    $(theElement).slideToggle('normal', function() {
                        if ($(this).is(':visible')) {
                            $(this).prev().addClass('active');
                        }
                        else {
                            $(this).prev().removeClass('active');
                        }    
                    });
                    return false;
                }
                else {
                    if(theElement.hasClass('acitem') && theElement.is(':visible')) {
                        if($(parent).hasClass('collapsible')) {
                            $('.acitem:visible', parent).first().slideUp('normal', 
                            function() {
                                $(this).prev().removeClass('active');
                            }
                        );
                        return false;  
                    }
                    return false;
                }
                if(theElement.hasClass('acitem') && !theElement.is(':visible')) {         
                    $('.acitem:visible', parent).first().slideUp('normal', function() {
                        $(this).prev().removeClass('active');
                    });
                    theElement.slideDown('normal', function() {
                        $(this).prev().addClass('active');
                    });
                    return false;
                }
            }
        }
    );
});
};

$(document).ready(function() {$('.menu').initMenu();});