<!-- hide from old browsers

function turnOn(id) {
	
	var images = 16
	var whichImage = 'galleryImage1'
	
	for (images = 1; images <= 16; images++)
		{
		whichImage = 'galleryImage' + images;
		document.getElementById(whichImage).style.visibility = 'hidden';
		document.getElementById(id).style.visibility = 'visible';
		}	
	}

//-->