Namespace is a problem. Every part of the code is tied to contacts.js

<script type='text/javascript'>
// This code is a snippet from contacts.js
var setCurrent = function c_setCurrent(contact) {
  currentContact = contact;
  if ('mozNfc' in navigator && contacts.NFC) {
    contacts.NFC.startListening(contact);
  }

  if (contacts.Details) {
    contacts.Details.setContact(contact);
  }
};
</script>

It's in JS and DOM :S

<script type='text/javascript'>
if (fb.isFbContact(contact)) {
  if (!fb.isFbLinked(contact)) {
    var fbContact = new fb.Contact(contact);
    //...
  }
  // ...
  var getPhones = function getPhones(contact) {
    var selector = '#view-contact-form form div.phone-template:not(.facebook)';
    var phones = dom.querySelectorAll(selector);
    // ...
  };
}

// And is in the HTML as well! :S
</script>