if (document.images) {
  b_contact_f2 = new Image(114 ,21); b_contact_f2.src = "img/b_contact_f2.gif";
  b_contact_f1 = new Image(114 ,21); b_contact_f1.src = "img/b_contact.gif";
  b_plan_f2 = new Image(90 ,21); b_plan_f2.src = "img/b_plan_f2.gif";
  b_plan_f1 = new Image(90 ,21); b_plan_f1.src = "img/b_plan.gif";
  b_site_f2 = new Image(87 ,21); b_site_f2.src = "img/b_site_f2.gif";
  b_site_f1 = new Image(87 ,21); b_site_f1.src = "img/b_site.gif";
  b_presse_f2 = new Image(77 ,21); b_presse_f2.src = "img/b_presse_f2.gif";
  b_presse_f1 = new Image(77 ,21); b_presse_f1.src = "img/b_presse.gif";
  b_puce_f2 = new Image(15 ,12); b_puce_f2.src = "img/b_puce_f2.gif";
  b_puce_f1 = new Image(15 ,12); b_puce_f1.src = "img/b_puce.gif";
  b_demo_f2 = new Image(84 ,10); b_demo_f2.src = "img/b_demo_f2.gif";
  b_demo_f1 = new Image(84 ,10); b_demo_f1.src = "img/b_demo.gif";
  b_ret_f2 = new Image(136 ,12); b_ret_f2.src = "img/b_ret_f2.gif";
  b_ret_f1 = new Image(136 ,12); b_ret_f1.src = "img/b_ret.gif";
  }
  d=0