<!--
var imgPath = "http://www.philamuseum.org/images/cad/large/";
var cur = 1;
var index = 0;
function setCount(divName,arr) {
	document.getElementById(divName).innerHTML = cur + " of " + arr.length;
}
function incrCount(divName,imgName,arr) {
	cur++;
	index++;
	if (cur > arr.length) {
		cur = 1;
	}
	if (index > arr.length-1) {
		index = 0;
	}
	document.images[imgName].src = imgPath + arr[index];
	setCount(divName,arr);
}
function decrCount(divName,imgName,arr) {
	cur--;
	index--;
	if (cur < 1) {
		cur = arr.length;
	}
	if (index < 0) {
		index = arr.length-1;
	}
	document.images[imgName].src = imgPath + arr[index];
	setCount(divName,arr);
}
//-->