title: TinyMCE Popup Window in Wordpress
body: <p>I am creating wordpress plugin where registering a TinyMCE button for inserting shortcode with a popup window <code>pop_up_window.php</code> for setting. But inside the <code>pop_up_window.php</code> page, I can't dynamic to links those will work when Wordpress is installed in a root directory or in a sub directory. </p>
  
  <p>Screenshot: <img src="https://i.stack.imgur.com/FCo7J.png" alt="enter image description here"></p>
  
  <p>i tried, <code>../../../</code>, <code>../../../../</code> but no luck.</p>
  
  <p>I would like to know how to fix it. </p>
  
  <p>Thanks</p>