//when thumbnail button is clicked, swap photo
function swapPhoto(ID1,ID2,imgpath,imgtext) {
		window.document.images[ID1].src = imgpath;
		var parentID = null;
		if (document.layers) {
			var oLayer = (parentID)? eval('document.' + parentID + '.document.' + ID2 + '.document') : document.layers[ID2].document;
			oLayer.open();
			oLayer.write(imgtext);
			oLayer.close();
		}
		else if (document.all) document.all[ID2].innerHTML = imgtext
		else if (parseInt(navigator.appVersion)>=5&&navigator.appName=="Netscape") {
			document.getElementById(ID2).innerHTML = imgtext;
		}		
}