title: How to setup Google Content Experiments with the original Url and without query string parameters
body: <p>I want to set up a Google Content Experiment to do A/B testing on the homepage by testing the addition of a new button in the header menu.  When setting up the experiment, Google forces you to have two unique Urls.  Another problem is the experiment code adds a query string parameter to the Url which is far from ideal. I don't want to be redirecting users off to a different page or even the same page with a query string parameter. Here is what it looks like: mysite.com?utm_expid=XXXXXXX-X</p>
  
  <p>I found that you can edit Google's experiment JavaScript to get closer to what I want, but I'm not sure if this will collect data correctly or if editing the code is supported.</p>
  
  <pre><code>//This line returns the variation number (0=Control, 1=Variation 1) 
  //so I can show or hide the test button bases on this variable:
    var combination = utmx('combination');
  
  //Removing this line eliminates the redirect:
    utmx('url','A/B');
  </code></pre>
  
  <p><strong>How can I do a simple A/B test while preserving the original Url of the page?</strong>  </p>