function showPhoto(id) {
	var photo = document.getElementById(id).style;
  photo.MozOpacity   = 1;
  photo.KhtmlOpacity = 1;
  photo.opacity      = 1;
	photo.filter = 'alpha(opacity=100)';
}

function setOpacity(id) {
	var photo = document.getElementById(id).style;
  photo.MozOpacity   = 0.6;
  photo.KhtmlOpacity = 0.6;
  photo.opacity      = 0.6;
	photo.filter = 'alpha(opacity=60)';
}