function showpic(pic) {
	var img = document.getElementById('changeimg');
	if (pic == 'res') {
	img.src = 'images/photos-res.jpg';
	} 
	if (pic == 'bar') {
	img.src = 'images/photos-bar.jpg';
	}
}
	
function showpic2(pic) {
	var img = document.getElementById('changeimg');
	if (pic == 'cat1') {
	img.src = 'images/cat1.jpg';
	} 
	if (pic == 'cat2') {
	img.src = 'images/cat2.jpg';
	}
	if (pic == 'cat3') {
	img.src = 'images/cat3.jpg';
	}
	if (pic == 'cat4') {
	img.src = 'images/cat4.jpg';
	}
	if (pic == 'cat5') {
	img.src = 'images/cat5.jpg';
	}			
}