/** 
 * Multi-level Drop Down Menu 2.0 
 * August 22, 2009 
 * Corey Hart @ http://www.codenothing.com 
 */  
;(function($){ 
    // Needed for IE Compatibility 
    $.fn.reverse = [].reverse; 
 
    $.fn.dropDownMenu = function(options){ 
        return this.each(function(){ 
            // Defaults with metadata support 
            var $mainObj = $(this), menus = [], classname, timeout, $obj, $obj2,  
                settings = $.extend({ 
                    timer: 500, 
                    parentMO: null, 
                    childMO: null, 
                    levels: [], 
                    numberOfLevels: 5 
                }, options||{}, $.metadata ? $mainObj.metadata() : {}); 
     
            // Set number of levels 
            if (settings.levels.length){ 
                settings.numberOfLevels = settings.levels.length; 
            }else{ 
                settings.levels[0] = settings.parentMO ? settings.parentMO : settings.childMO; 
                for (var i=1; i<settings.numberOfLevels+1; i++) 
                    settings.levels[i] = settings.childMO; 
            } 
     
            // Run through each level 
            menus[0] = $mainObj.children('li'); 
            for (var i=1; i<settings.numberOfLevels+1; i++){ 
                // Set Vars 
                classname = settings.levels[i-1]; 
                menus[i] = menus[i-1].children('ul').children('li'); 
     
                // Action 
                menus[i-1].mouseover(function(){ 
                    // Defaults 
                    $obj = $(this); $obj2 = $obj.children('a'); 
     
                    // Clear closing timer if open 
                    if (timeout)  
                        clearTimeout(timeout); 
     
                    // Remove all mouseover classes 
                    $('a', $obj.siblings('li')).each(function(){ 
                        var $a = $(this), classname = $a.data('classname'); 
                        if ($a.hasClass(classname)) 
                            $a.removeClass(classname); 
                    }); 
     
                    // Hide open menus and open current menu 
                    $obj.siblings('li').find('ul:visible').reverse().hide(); 
                    $obj2.addClass( $obj2.data('classname') ).siblings('ul').show(); 
                }).mouseout(function(){ 
                    if ($(this).children('a').data('classname') == settings.levels[0]) 
                        timeout = setTimeout(closemenu, settings.timer); 
                }).children('a').data('classname', classname); 
            } 
     
            // Allows user option to close menus by clicking outside the menu on the body 
            $(document).click(closemenu); 
     
            // Closes all open menus 
            function closemenu(){ 
                // Clear mouseovers 
                $('a', $mainObj).each(function(){ 
                    var $a = $(this), classname = $a.data('classname'); 
                    if ($a.hasClass(classname)) 
                        $a.removeClass(classname); 
                }); 
 
                // Close Menus backwards for IE Compatibility 
                $('ul:visible', $mainObj).reverse().hide(); 
 
                // Clear timer var 
                if (timeout)  
                    clearTimeout(timeout); 
            } 
        }); 
    }; 
})(jQuery);