ele-ouside-event.js

(function($){
    $.fn.outside = function(ename, cb){
        return this.each(function(){
            var $this = $(this),
                self = this;

            $(document).bind(ename, function tempo(e){
                if(e.target !== self && !$.contains(self, e.target)){
                    cb.apply(self, [e]);
                    if(!self.parentNode) $(document.body).unbind(ename, tempo);
                }
            });
        });
    };
}(jQuery));

$('.panel-tab').outside('click', function() {
    $('#panel').stop(true, true).slideUp('slow');
});