Recently I updated my vps server of my site http://www.youngyaa.com.au to support full site ssl for future E-commercial use.
But after successfully installing COMODO CA certificate, my chrome reported that "some of the site content is using http, which is not fully secured".
By locating the http resource, I found that the problem is at the file for the display of "Video" JA ACM Module.
Path: (siteroot)/templates/ja_events_ii/acm/video/tmpl/
File: style-1.php
Reason: at line 73
<img width="100%" height="100%" src="http://img.youtube.com/vi/<?php echo $video_link; ?>/maxresdefault.jpg" />, the file uses http to get YouTube video thumbnail image
it uses http to get video thumbnail. By simply changing the http to https (now YouTube already support getting thumbnail image by https) my problem was solved and all site content were reported green by web browser.
This may be a very small problem, but I hope it could be modified after update, so that I wouldn’t need to modify this file again manually after possible change in the future.