function showImg(selected) {
	for (var i=1; i < 6; i++) {
		if (i==selected) {
			try {
				document.getElementById('img-'+i).style.display = 'block';
				document.getElementById('link-'+i).src = base+'img/photo_red_dot.jpg';
			} catch (e) {}
		}
		else {
			try {
				document.getElementById('img-'+i).style.display = 'none';
				document.getElementById('link-'+i).src = base+'img/photo_blue_dot.jpg';
			} catch (e) {}
		}
	}
}