Hover slideshow

Hover slideshow

Sorry, i am bad in Eanglish.

How i can put more pictures on button. http://spektras.websoftas.lt/
Now is just two img. I need like slideshow.

i used this script

   $$.hover(function () {
                            $$.stop().animate({
                                opacity: 0
                            }, 250);
                        }, function () {
                            $$.stop().animate({
                                opacity: 1
                            }, 250);
                        });