CommunityID/modules/default/views/scripts/messageusers/index.phtml

<!--[if IE]>
<style>
    /* avoid IE jumping when clearing float here */
    #messageUsersForm #textareasWrapper dd {
        clear       : none;
    }
</style>
<![endif]-->
<em><?php echo $this->translate('This message will be sent to all registered Community-ID users') ?></em>
<form id="messageUsersForm" name="messageUsersForm" method="post" action="<?php echo $this->base ?>/messageusers/send" class="formGrid">
    <input type="hidden" name="messageType" value="rich" />
    <?php echo $this->messageUsersForm->subject ?>
    <?php echo $this->messageUsersForm->cc ?>
    <div id="textareasWrapper">
        <div id="linkSwitchToPlain">
            <a href="#" onclick="COMMID.messageUsers.switchToPlainText()"><?php echo $this->translate('switch to Plain-Text') ?></a>
        </div>
        <div id="linkSwitchToRich">
            <a href="#" onclick="COMMID.messageUsers.switchToRichText()"><?php echo $this->translate('switch to Rich-Text (HTML)') ?></a>
        </div>
        <br />
        <div id="bodyPlainWrapper">
            <?php echo $this->messageUsersForm->bodyPlain ?>
        </div>
        <div id="bodyHTMLWrapper">
            <?php echo $this->messageUsersForm->bodyHTML ?>
        </div>
    </div>
    <input type="submit" id="send" value="<?php echo $this->translate('Send') ?>" />
    <script type="text/javascript">
        var oButton = new YAHOO.widget.Button("send");
    </script> 
</form>
<script type="text/javascript">
    YAHOO.util.Event.onDOMReady(function() {
        $("messageUsersForm").onsubmit = COMMID.messageUsers.send;
    });
</script>