As far as I can tell, there seems to be a "problem" with XHTML in that some image source paths that can be used for an image cannot be used for a table background image - unless the image is in a subfolder relative to the page.
Specifically, the URL "/folder/folder/filename.jpg" will work just fine for an image, but will not work for a background image.
(unless I am doing something stupid - I have tested this on simple pages with simple tables)
Thus, you cannot use table background images in the Editor. However, if you could detect this case and use the "../../" method of locating the background image, it will work fine. Of course it will stop working if you save the file and use it somewhere else at a different folder level...
Is there a setting I am missing here? This is not truly an editor bug, but (as far as I can surmise) an HTML bug, but it could be corrected with a "fix" in the editor...?
Is there another way around this issue I don't know about? I have tried "~/folder/folder/filename.jpg" to no avail, as well.
P.S. It appears that the "../../" solution works for tables but not in the editor. In the past, I have solved this problem using an absolute patht (
http://domain.com/image-path) to make it work (not in the editor, but on a webpage)
P.P.S. I assume this is a bug in IE7