$(document).ready(function() {
  $(".displaylevel3").click(function () {
    if($(this).next().next().css('display')=='none') {
      $(this).next().next().animate({
    left: '+=50',
    height: 'toggle'
  }, 100, function() {
    // Animation complete.
  });
      $(this).children('img').attr('src','fileadmin/templates/images/plansite_fleche_fermer.png');
    } else {
      $(this).next().next().animate({
     left: '-=50',
     height: 'toggle'
   }, 100, function() {
     // Animation complete.
   });
      $(this).children('img').attr('src','fileadmin/templates/images/plansite_fleche_ouvrir.png')
    }
  });
});