if (document.images) {
 
  img1 = new Image
  img2 = new Image
  img3 = new Image
  img4 = new Image
  img5 = new Image
  img6 = new Image
  img7 = new Image
  img8 = new Image
  nav_main = new Image

  img1.src = "../../../../media/nav-home.gif"
  img2.src = "../../../../media/nav-about.gif"
  img3.src = "../../../../media/nav-product.gif"
  img4.src = "../../../../media/nav-tech.gif"
  img5.src = "../../../../media/nav-library.gif"
  img6.src = "../../../../media/nav-resources.gif"  
  img7.src = "../../../../media/nav-quote.gif"
  img8.src = "../../../../media/nav-contact.gif"				
  nav_main.src = "../../../../media/nav-main.gif"

}