function popUpPage (page, name, width, height, scrollbar, resize, menu, location){
  window.open(page, name,'toolbar=0,location=' + location + ',directories=0,status=0,menubar=' + menu + ',scrollbars=' + scrollbar + ',resizable= ' + resize + ',width=' + width +',height= '+ height + ',left=350,top=100');
}

function openPhoto (photoName) {
	var myPhotoName;
	myPhotoName = photoName;
	myPhotoName = myPhotoName.substr (0, myPhotoName.length - 4);
	myPhotoName = myPhotoName + '_zoom' + photoName.substr (photoName.length - 4, photoName.length)
	popUpPage (myPhotoName, 'photo', '570px', '760px', 'yes', 'yes', 'no', 'no');
}

function changePhoto (photoName) {
	document.getElementById ('productPhoto').src = photoName;
}