(function($){
    $.fn.menuHightlight = function(options) {
        var defaults = {
            'class_name' : 'on' 
        };
        var setting = $.extend(defaults, options);
        this.each(function() {
            //if (this.href == document.location.href) {
            	//alert($(this).$parent());
                $(this).addClass(setting.class_name);
                //$(this).$parent('li').$('a').addClass(setting.class_name);
                return false;
            //}
        });
        
        return this;
    };
})(jQuery);