I'm trying to insert a custom image map into a blog post, so that clicking on different parts of an image at the top of the post will lead to anchors in other parts of the post.
I have generated the image map code correctly, and tested it in a separate non-wordpress plain HTML page, where it worked fine.
Whenever I insert the HTML (using the code view, not the WYSIWYG editor view), it gets erased as soon as I save the post. However, I checked and it looks like
<area> are both permitted tags on Wordpres.com.
This blog is not hosted by Wordpress.com (it's actually a site on the WPMU instane hosted right here on Stack Exchange), but I would assume that by default, the downloaded version of Wordpress would allow at least the same tags as the Wordpress.com hosted blogs.
Is there a setting which a network super-admin has to change to allow these tags, or am I inserting them incorrectly? If the tags are allowed, what might cause them to be outright removed?