$(document).ready(function() {
  $('.menuTopo li')
    .css( {backgroundPosition: "0 0"} )
    .mouseover(function(){
      $(this).stop().animate({backgroundPosition:"(0 0)"}, {duration:500})
    })
    .mouseout(function(){
      $(this).stop().animate({backgroundPosition:"(0 -200px)"}, {duration:200, complete:function(){
        $(this).css({backgroundPosition: "0 -200px"})
        
      }})
    })
  
});