title: javascript:window.open(window.clickTag) opens double tabs in Firefox
body: <p>I am using clickTags in my code for tracking. This is my setup.</p>
  
  <pre><code>&lt;script type="text/javascript"&gt;
      var clickTag = "https://www.example.com";
  &lt;/script&gt;
  
  &lt;a href="javascript:window.open(window.clickTag)"&gt;
  ---Content---
  &lt;/a&gt;
  </code></pre>
  
  <p>The issue is with Firefox opening double tabs when I click on the link. I only want it to open to the information that is associated with the link. My question, is there a workaround or is there a bug with Firefox? </p>