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
				img9 = new Image
				img10 = new Image				
				nav_main = new Image
				 
				img1.src = "images/nav-home.gif"
				img2.src = "images/nav-about.gif"
				img3.src = "images/nav-difference.gif"
				img4.src = "images/nav-delivery.gif"
				img5.src = "images/nav-applications.gif"
				img6.src = "images/nav-tour.gif"
				img7.src = "images/nav-resources.gif"
				img8.src = "images/nav-sitemap.gif"
				img9.src = "images/nav-quote.gif"
				img10.src = "images/nav-contact.gif"				
				nav_main.src = "images/nav-main.gif"
			}