$(document).ready(function(){
  //When mouse rolls over
  $("li").mouseover(function(){
    $(this).stop().animate({height:'180px'},{queue:false, duration:600, easing: 'easeOutBounce'})
  });
  //When mouse is removed
  $("li").mouseout(function(){
    $(this).stop().animate({height:'50px'},{queue:false, duration:600, easing: 'easeOutBounce'})
  });
});