firefox的Facebook评论框问题

firefox的Facebook评论框问题,firefox,comments,facebook-comments,Firefox,Comments,Facebook Comments,我面临firefox的问题,我的fb评论框显示在chrome和safari上,firefox除外 <div id="fb-root"></div> <script>(function(d, s, id) { var js, fjs = d.getElementsByTagName(s)[0]; if (d.getElementById(id)) {return;} js = d.createElement(s); js.id = id; js.src = "/

我面临firefox的问题,我的fb评论框显示在chrome和safari上,firefox除外

<div id="fb-root"></div>
<script>(function(d, s, id) {
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) {return;}
js = d.createElement(s); js.id = id;
js.src = "//connect.facebook.net/en_US/all.js#xfbml=1";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));</script>

<div class="fb-comments" data-href="xxxxxx" data-num-posts="10" data-width="500"></div>
</b:if>
这是html开始标记

<html xmlns:fb="http://ogp.me/ns/fb#">