Add subscribe to Google Mailing Lists buttons

<script type="text/javascript">
   function msgbox() {   alert("An Invatation to our Google Group has been sent to " + _gel("emailconf").value + ". You will have to confirm the email invitation to join and recieve future emails. You can opt out of our group at anytime using the Unsubscribe link in the email."); }
</script>

  <form action="http://groups.google.com/group/YOUR GOOGLE GROUP NAME HERE/boxsubscribe" id="formconf" onsubmit="msgbox()">
  Email: <input type=text name=email id="emailconf">
   <input type="submit" value="Subscribe">
  </form>

The issue provides an HTML/JavaScript subscription form but names no target file or page. Start by locating the website page and entry point for mailing-list links, then compare its rendered output with the requested Google Groups subscribe button. Done means the buttons appear and the subscription flow works as described.