confirmation_opentilt.js

//https://developers.google.com/analytics/devguides/collection/analyticsjs/advanced#multipletrackers
ga('create', 'UA-54906935-2', 'auto', {'name': 'lifefuelsTracker'});
ga('require', 'ec');
ga('ec:setAction', 'purchase', {
  'id': 'SET_TRANS_ID_HERE',                         // (Required) Transaction id (string).
  'revenue': 'SET_TOTAL_HERE',                     // Revenue (currency).
  'coupon': 'SET_COUPON_HERE'                  // Transaction coupon (string).
});
ga('lifefuelsTracker.send', 'event', 'preorders', 'completed purchase');

tracking_opentilt.js

// Adding new tracker to send lifefuels specific events.
//https://developers.google.com/analytics/devguides/collection/analyticsjs/advanced#multipletrackers
ga('create', 'UA-54906935-2', 'auto', {'name': 'lifefuelsTracker'});
$('.tilt_modal input, .tilt_modal select')
  .on('blur', function(e) {
    'use strict';
    var obj = e.currentTarget;
    var value = obj.value;
    if (obj.name.match(/^(card_number|security_code)$/) && value) {
      value = '(omitted)';
    }
    ga('lifefuelsTracker.send', 'event', 'preorders', 'form-input', obj.name + ': ' + value);
  });
$('.tilt_modal button')
  .click(function(e) {
    'use strict';
    var obj = e.currentTarget;
    // run in next tick so that the form can be validated, 0 moves this function to the end of the execution loop.
    setTimeout(function() {
      var invalidFields = $('input.error, select.error', obj.form).map(function(idx, elem) { return elem.name; }).get();
      if (invalidFields.length > 0) {
        ga('lifefuelsTracker.send', 'event', 'preorders', 'form-invalid', invalidFields.join(', '));
      }
      else {
        ga('lifefuelsTracker.send', 'event', 'preorders', 'preorder-submit');
      }
    }, 0);
  });