$(document).ready(function(){
      $('#menu').spritemenu({
        grid:"images/menu.jpg",
        buttonwidth: 217,
        buttonheight: 52,
        speed: 'slow',
        easing: 'easeOutBounce',  //You need the easing plugin for anything other than 'swing' or 'linear'
        animate: 'height'
      });      
    });