if (document.images) {
  home_f2 = new Image(92 ,40); home_f2.src = "../images/navbar/home_f2.gif";
  home_f1 = new Image(92 ,40); home_f1.src = "../images/navbar/home.gif";
  about_f2 = new Image(128 ,40); about_f2.src = "../images/navbar/about_f2.gif";
  about_f1 = new Image(128 ,40); about_f1.src = "../images/navbar/about.gif";
  services_f2 = new Image(91 ,40); services_f2.src = "../images/navbar/services_f2.gif";
  services_f1 = new Image(91 ,40); services_f1.src = "../images/navbar/services.gif";
  contact_f2 = new Image(82 ,40); contact_f2.src = "../images/navbar/contact_f2.gif";
  contact_f1 = new Image(82 ,40); contact_f1.src = "../images/navbar/contact.gif";
  }