function showPic(source) {
	if (document.getElementById) {
		document.getElementById('photo-main').src = source;
		return false;
	} else {
		return true;
	}
}

function showFirst() {
	if (document.getElementById) {
		document.getElementById('photo-main').src = "images/floors/hardwood-20.jpg";
		return false;
	} else {
		return true;
	}
}