<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=0.5, maximum-scale=0.5, minimum-scale=0.5">
</head>
<body>
<button onclick="addSupportedMethod('https://play.google.com/billing')">addSupportedMethod('https://play.google.com/billing')</button>
<button onclick="createPaymentRequest()">create PaymentRequest</button>
<button onclick="show()">show</button>
<pre id="msg"></pre>
</body>
<script src="index.js"></script>
<script src="util.js"></script>
</html>