//strange that jquery doesn't have a selected hook already for drop down lists, this should do for now
(function ($) {
    $.fn.selected = function (fn) {
        return this.each(function () {
            var clicknum = 0;
            $(this).click(function () {
                clicknum++;
                if (clicknum == 2) {
                    clicknum = 0;
                    fn();
                }
            });
        });
    }
})(jQuery);