//PRELOAD IMAGES
image1 = new Image();
image1.src = "images/nav_company_o.jpg";
image2 = new Image();
image2.src = "images/nav_software_o.jpg";
image3 = new Image();
image3.src = "images/nav_news_o.jpg";
image4 = new Image();
image4.src = "images/nav_contact_o.jpg";
// End -->