(function($){
	$.fn.popupNav = function(settings) {
		settings = $.extend({
			}, settings);

		var matches = this;

		function _initialize() {
			if (matches.length <= 0)
				return;
			
			matches.hover(
							function() {
								var menuitem = $(this);
								var popup = menuitem.children('ul');
								menuitem.toggleClass('highlight');
								popup.stop().css({display: 'block', visibility: 'visible', opacity: 0}).fadeTo('fast', 1);
							},
							function() {
								var menuitem = $(this);
								var popup = menuitem.children('ul');
								menuitem.toggleClass('highlight');
								popup.stop().fadeOut('slow');
							}
						 );
		}
		
		_initialize();
		return this;
	}
})(jQuery);