if (document.images) {
    img1 = new Image();
    img1.src = "./gfx/home-o.png";
	img2 = new Image();
    img2.src = "./gfx/history-o.png";
	img3 = new Image();
    img3.src = "./gfx/profile-o.png";
	img4 = new Image();
    img4.src = "./gfx/why-felderman-o.png";
	img5 = new Image();
    img5.src = "./gfx/portfolio-o.png";
	img6 = new Image();
    img6.src = "./gfx/services-o.png";
	img7 = new Image();
    img7.src = "./gfx/properties-o.png";
	img8 = new Image();
    img8.src = "./gfx/contact-o.png";
}

function menuShow(elem, prop) {
	$(elem).show();
}

function menuHide(elem, prop) {
	$(elem).hide();
}