title: Relative URL to a different port number in a hyperlink?
body: <p>Is there a way without Javascript / server-side scripting to link to a different port number on the same box, if I don't know the hostname?</p>
  
  <p>e.g.:</p>
  
  <pre><code>&lt;a href=":8080"&gt;Look at the other port&lt;/a&gt;
  </code></pre>
  
  <p>(This example does't work as it'll just treat :8080 as a string I want to navigate to)</p>