if (document.images)
    {
      preload_image_object = new Image();
      // set image url
      image_url = new Array();
      image_url[0] = "images/menu/certificats-cadeaux-on.jpg";
      image_url[1] = "images/menu/decouvrez-nous-on.jpg";
      image_url[2] = "images/menu/massage-entreprise-on.jpg";
      image_url[3] = "images/menu/promotions-on.jpg";
	image_url[4] = "images/menu/shim-on.jpg";
	image_url[5] = "images/menu/soins-on.jpg";
	image_url[6] = "images/menu/spa-on.jpg";
	image_url[7] = "images/menu/tarifs-on.jpg";
	image_url[8] = "images/reservez-ON.jpg";


       var i = 0;
       for(i=0; i<=3; i++) 
         preload_image_object.src = image_url[i];

    }