When editing a page, if you add "background-image" to the inline
style for an element (either through the WYSIWYG or Source view),
Sitellite adds double quotes around the URL, which breaks the
HTML.
So this...
<p style="background-image:url(background.gif)">
...becomes this...
<p style="background-image:url("background.gif")">
Now that the HTML is invalid, the CMS subsequently tries to
"fix" the tag structure, resulting in this:
<p style="background-image:url("></p>background.gif")">
The URL itself, having been ousted from the tag, is now visible
on the page as plain text.
Even if the URL is encapsulated in single quotes in Source view,
Sitellite immediately replaces the single quotes with double
quotes. Thus, there appears to be no workaround to prevent the CMS
from mangling the HTML.