/**
 * 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);