function popup(path, w, h) {
	if (w==null) { var w=1000; }
	if (h==null) { var h=600; }
	var shoppingPopup = window.open(path, 'shoppingPopup', 'width='+w+',height='+h+',toolbar=no,menubar=no,status=yes,scrollbars=yes');
	shoppingPopup.focus();
	shoppingPopup.resizeTo(w,h);
}