var totalphotos = 7;
var topphoto = 1;
var activLGphoto = 1;

function photoup() {
	if (topphoto > 1) {
		topphoto = topphoto - 1;
		for (i=1;i<=totalphotos;i++) {
			if ((i >= topphoto) && (i < (topphoto + 3))) {
				document.getElementById('A053_' + i + '_T').style.display = 'block';
			} else {
				document.getElementById('A053_' + i + '_T').style.display = 'none';
			}
		}
		if (topphoto < (totalphotos - 3)) {
			document.getElementById('downlink').style.display = 'block';
		}
		if (topphoto == 1) {
			document.getElementById('uplink').style.display = 'none';
		}
	}
}

function photodown() {
	if (topphoto < (totalphotos - 3)) {
		for (i=1;i<=totalphotos;i++) {
			if ((i > topphoto) && (i <= (topphoto + 3))) {
				document.getElementById('A053_' + i + '_T').style.display = 'block';
			} else {
				document.getElementById('A053_' + i + '_T').style.display = 'none';
			}
		}
		topphoto = topphoto + 1;
		if (topphoto == (totalphotos - 3)) {
			document.getElementById('downlink').style.display = 'none';
		}
		if (topphoto > 1) {
			document.getElementById('uplink').style.display = 'block';
		}
	}
}

function showlgphoto(thephoto) {
	document.getElementById('LGPhoto').innerHTML="<img src='images/Large/053_" + thephoto + ".jpg' width='482' height='345' alt='' border='0'>";
}