/**
* @name             Accordion
* @descripton           This Jquery plugin makes creating accordions pain free
* @version            1.4
* @requires           Jquery 1.2.6+
*
* @author             Jan Jarfalk
* @author-email         jan.jarfalk@unwrongest.com
* @author-website         http://www.unwrongest.com
*
* @licens             MIT License - http://www.opensource.org/licenses/mit-license.php
*/

(function(jQuery){
     jQuery.fn.extend({
         accordion: function() {       
            return this.each(function() {
              
              var $ul           = $(this),
          elementDataKey      = 'accordiated',
          activeClassName     = 'active',
          activationEffect    = 'slideToggle',
          panelSelector       = 'ul, div',
          activationEffectSpeed   = 'medium',
          itemSelector      = 'li';
              
        if($ul.data(elementDataKey))
          return false;
                          
        $.each($ul.find('ul, li>div'), function(){
          $(this).data(elementDataKey, true);
          $(this).hide();
        });
        
        $.each($ul.find('.parent'), function(){
          $(this).click(function(e){
            activate(this, activationEffect);
            return void(0);
          });
          
          $(this).bind('activate-node', function(){
            $ul.find( panelSelector ).not($(this).parents()).not($(this).siblings()).slideUp( activationEffectSpeed );
            activate(this,'slideDown');
          });
        });
        
        var active = (location.hash)?$ul.find('a[href=' + location.hash + ']')[0]:$ul.find('li.current .parent')[0];

        if(active){
          activate(active, false);
        }
        
        function activate(el,effect){
          
          $(el).parent( itemSelector ).siblings().removeClass(activeClassName).children( panelSelector ).slideUp( activationEffectSpeed );
          
          $(el).siblings( panelSelector )[(effect || activationEffect)](((effect == "show")?activationEffectSpeed:false),function(){
            
            if($(el).siblings( panelSelector ).is(':visible')){
              $(el).parents( itemSelector ).not($ul.parents()).addClass(activeClassName);
            } else {
              $(el).parent( itemSelector ).removeClass(activeClassName);
            }
            
            if(effect == 'show'){
              $(el).parents( itemSelector ).not($ul.parents()).addClass(activeClassName);
            }
          
            $(el).parents().show();
          
          });
          
        }
        
            });
        }
    }); 
})(jQuery);