title: Dynamically change Wordpress Theme
body: <p>How can I set an a tag to dynamically change the theme currently being displayed by wordpress?</p>
  
  <p>I understand the switch function as described in a similar question here: <a href="https://stackoverflow.com/questions/9620898/display-page-content-using-multiple-templates-wordpress">Display page content using multiple templates - WordPress</a> , but I don't know how to implement the change. Should the switch be added to index.php inside a theme, or inside the theme folder? Does my link point to the index.php file?</p>
  
  <p>I would like to do this without a plugin if possible.</p>
  
  <p>An example of a site which does this already: www.envye.com/wordpress/</p>
  
  <p>Thank you!</p>