Accordion Menu for jQuery

jquery.accordion_menu.js

jQuery.fn.accordionMenu = function(settings){
	settings = jQuery.extend({
		delegate_selector	: 'a',		// {selector} selector that will receive the click
		expandable_selector	: 'dd',		// {selector} selector that will expand/collapse
		hide_onload			: true,		// {boolean} wheter to hide menus on page load
		active_class		: 'active',	// {string} the name of the class that will be applied to the active element
		fx					: false,	// {boolean} whether to use slide effect or simple hide/show
		fx_speed			: 'normal',	// {string|number} speed keyword (slow, normal, fast) or milliseconds
		dblclick_go			: true		// {boolean} whether to work as normal link on double click when menu is displayed
	}, settings);
	$menu_el = jQuery(this);
	if ( settings.hide_onload ) $menu_el.find(settings.expandable_selector).hide();
	$menu_el.delegate(settings.delegate_selector, 'click', function(){
		var $e 				= jQuery(this),
			target 			= $e.attr('rel'),
			$target 		= jQuery('#'+target),
			$current_active = $menu_el.find(settings.expandable_selector+'.'+settings.active_class);
			if ( $target.length ) {
				switch(settings.fx){
					case true:
						if ( settings.dblclick_go && $target.hasClass(settings.active_class) ) {
							return true;
						} else {
							$current_active.slideUp(settings.fx_speed, function(){
								jQuery(this).removeClass(settings.active_class);
							});
							$target.slideDown(settings.fx_speed, function(){ jQuery(this).addClass(settings.active_class) });
						}
						break;
					default:
						if ( settings.dblclick_go && $target.hasClass(settings.active_class) ) {
							return true;
						} else {
							$current_active.hide(0, function(){
								//jQuery(this).removeClass(settings.active_class);
								$menu_el.find('.'+settings.active_class).removeClass(settings.active_class);
							});
							if ( $current_active.attr('id') !== target ) $target.show(0, function(){ jQuery(this).addClass(settings.active_class); /*$e.parent().addClass(settings.active_class);*/ });
						}
				}
				return false;
			} else {
				/**
				 * Si el menu de navegacion correspondiente no existe,
				 * funciona como link normal
				 **/
				return true;
			}
	});
}