$(document).ready(function(){  
  
//When mouse rolls over  
$("li").mouseover(function(){  
$(this).stop().animate({height:'90px'},{queue:false, duration:400, easing: 'easeOutBounce'})  
});  
   
//When mouse is removed  
$("li").mouseout(function(){  
$(this).stop().animate({height:'20px'},{queue:false, duration:600, easing: 'easeInOutElastic'})  
 });  
   
});