You could use more appropriate path, like:
$path = ABSPATH . WPINC . '/js/tinymce/tiny_mce_popup.js'
And you should use wp_enqueue_script, so you could put something like this:
wp_enqueue_script('my-tinymce-popup', $path);
You could use more appropriate path, like:
$path = ABSPATH . WPINC . '/js/tinymce/tiny_mce_popup.js'
And you should use wp_enqueue_script, so you could put something like this:
wp_enqueue_script('my-tinymce-popup', $path);