Reverse to YUI 3.0.0 since with YUI.3.10.3, comment content including words 'paragraph' or 'section' do not show up on Firefox, this is weird and has to be investigated.
{% if flash.message %}
<script type="text/javascript">
<!--
$(function() {
enqueueMsg('{{ flash.message }}');
}) ;
-->
</script>
<div id="t-msg-wrapper" class="message" style="top:30px;left:30px; position:absolute;"></div>
{% endif %}