if(document.images){
img1 = new Image();img1.src = "Files/Navigation/Button_home.gif";img1Over = new Image();img1Over.src = "Files/Navigation/Button_home_over.gif";
img2 = new Image();img2.src = "Files/Navigation/button_about.gif";img2Over = new Image();img2Over.src = "Files/Navigation/button_about_over.gif";
img4 = new Image();img4.src = "Files/Navigation/Button_multimedia.gif";img4Over = new Image();img4Over.src = "Files/Navigation/Button_multimedia_over.gif";
img5 = new Image();img5.src = "Files/Navigation/button_partners.gif";img5Over = new Image();img5Over.src = "Files/Navigation/button_partners_over.gif";
img6 = new Image();img6.src = "Files/Navigation/Button_news.gif";img6Over = new Image();img6Over.src = "Files/Navigation/Button_news_over.gif";

}