gistfile1.js

  self.encryptForm = function (form) {
    var element, encryptedValue,
        fieldName, hiddenField,
        i, inputs;

    form = extractForm(form);
    inputs = findInputs(form);

    while (hiddenFields.length > 0) {
      try {
        form.removeChild(hiddenFields[0]);
      } catch (err) {}
      hiddenFields.splice(0, 1);
    }

    for (i = 0; i < inputs.length; i++) {
      element = inputs[i];
      fieldName = element.getAttribute("data-encrypted-name");
      encryptedValue = self.encrypt(element.value);
      console.log("encryption", element.value, encryptedValue);
      element.removeAttribute("name");
      hiddenField = createElement("input", {
        value: encryptedValue,
        type: "hidden",
        name: fieldName
      });
      hiddenFields.push(hiddenField);
      form.appendChild(hiddenField);
    }
  };

  self.onSubmitEncryptForm = function (form, callback) {
    var wrappedCallback;

    form = extractForm(form);

    wrappedCallback = function (e) {
      self.encryptForm(form);
      return (!!callback) ? callback(e) : e;
    };

    if (window.jQuery) {
      window.jQuery(form).submit(wrappedCallback);
    } else if (form.addEventListener) {
      form.addEventListener("submit", wrappedCallback, false);
    } else if (form.attachEvent) {
      form.attachEvent("onsubmit", wrappedCallback);
    }
  };