/*
quickTree 0.4 - Simple jQuery plugin to create tree-structure navigation from an unordered list
http://scottdarby.com/

Copyright (c) 2009 Scott Darby

Dual licensed under the MIT and GPL licenses:
http://www.opensource.org/licenses/mit-license.php
http://www.gnu.org/licenses/gpl.html
*/
jQuery.fn.quickTree = function() {
    return this.each(function() {

        //set variables
        var $tree = $(this);
        var $roots = $tree.find('li');

        //set last list-item as variable (to allow different background graphic to be applied)
        $tree.find('li:last-child').each(function() {
            if ($(this).parent('ul').next('ul').length == 0) { $(this).addClass('last'); }
        });

        //add class to allow styling
        $tree.addClass('tree');

        //hide all lists inside of main list by default
        $tree.find('ul').hide();

        //iterate through all list items
        $roots.each(function() {

            //if list-item contains a child list
            if ($(this).children('ul').length > 0) {

                //add expand/contract control
                if ($(this).hasClass('firstCat')) {
                    $(this).addClass('root').prepend('<span class="expand firstExpand contract" />');
                    $(this).children('ul').slideDown();
                }
                else {
                    $(this).addClass('root').prepend('<span class="expand" />');
                }
            }

        }); //end .each


        //$('span.firstExpand').nextAll('ul').show();

        $('span.expand').click(function() {
            if ($(this).hasClass('contract')) {
                $(this).removeClass('contract').nextAll('ul').slideUp();
            }
            else { $(this).addClass('contract').nextAll('ul').slideDown(); }
        });

                
//                $('span.expand').toggle(
//                
//                    function() {
//                        $(this).toggleClass('contract').nextAll('ul').slideDown();
//                    },
//                
//                    function() {
//                        $(this).toggleClass('contract').nextAll('ul').slideUp();
//                    }
//                );

        $tree.css('visibility', 'visible');
    });
};