if (document.images) {
    img1 = new Image();
    img1.src = "./gfx/home-o.jpg";
	img2 = new Image();
    img2.src = "./gfx/history-o.jpg";
	img3 = new Image();
    img3.src = "./gfx/products-o.jpg";
	img4 = new Image();
    img4.src = "./gfx/product-installation-o.jpg";
	img5 = new Image();
    img5.src = "./gfx/field-services-o.jpg";
	img6 = new Image();
    img6.src = "./gfx/field-consultants-o.jpg";
	img7 = new Image();
    img7.src = "./gfx/contact-us-o.jpg";
	img8 = new Image();
    img8.src = "./gfx/employment-o.jpg";
}