if (document.images) 
{
      img1 = new Image();
      img2 = new Image();
      img3 = new Image();
      img4 = new Image();
      img5 = new Image();
      img6 = new Image();
      img7 = new Image();
      img1.src ="media/layoutlink_about_over.gif";
      img2.src ="media/layoutlink_contact_over.gif";
      img3.src ="media/layoutlink_faq_over.gif";
      img4.src ="media/layoutlink_home_over.gif";
      img5.src ="media/layoutlink_migration_over.gif";
      img6.src ="media/layoutlink_news_over.gif";
      img7.src ="media/layoutlink_rehibilitation_over.gif";
}