QR-Code generator ubiquity commnd

x.js

CmdUtils.CreateCommand({
  names: ['qr code', 'encode'],
  icon: "http://img205.imageshack.us/img205/231/qrcodezh1.gif",
  description: "Generates QR Code image based on selected url",
  argument: noun_type_url,
  preview: function(pBlock, {object}) {
    pBlock.innerHTML = '<img src="' + 'http://qrcode.kaywa.com/img.php?s=6&d=' + escape(object.text) + '" />';
  },
  execute: function(args) {
    Utils.openUrlInBrowser('http://qrcode.kaywa.com/img.php?s=8&d=' + escape(args.object.text));
  }
});