title: How to set width and height for window.opener() function?
body: <p>There is a social login wordpress plugin that produces a large popup window when authenticating a login from a social networking site (facebook, google, etc.)</p>
  
  <p>I would like to make the popup window much smaller, but can't figure it out. The code the produces the popup window is:</p>
  
  <pre><code>if( get_option( 'wsl_settings_use_popup' ) == 1 || ! get_option( 'wsl_settings_use_popup' ) ){
      ?&gt;
          &lt;html&gt;&lt;head&gt;&lt;script&gt;
          function init() {
              window.opener.wsl_wordpress_social_login({
                  'action'   : 'wordpress_social_login',
                  'provider' : '&lt;?php echo $provider ?&gt;'
              });
  
              window.close()
          }
  </code></pre>
  
  <p>How do I set the width and height for this popup?</p>
  
  <p>Thanks in advance!</p>