Trying to find out where youtube is getting the value for the session_token field in the post comment form on a videos page. I'm almost sure its set somewhere in javascript but can't find where. Anyone have any ideas?
HTML:
<form class="comments-post has-focus" method="post" action="/comment_servlet?add_comment=1" data-initialized="true">
<input type="hidden" name="session_token" value="{REMOVED}"> <--- This is the field
<input type="hidden" name="video_id" value="1nstE0EU4_w">
<input type="hidden" name="form_id" value="">
<input type="hidden" name="source" value="w">