I have made changes to our Kablink site with the file mentioned by Peter, but when using images as a background for tables on some pages the images cannot be found. This is because on some places in the system the url's used to open pages is constructed a bit different then normal and the path I placed in the file to the image isn't right on those pages. I'm using a path like ../ssf/a/path_to_image_folder. Using the variable <html:rootPath/> in this file doesn't seem to work. This happens when you open an entry from a discussions folder as a new page (so not display as overlay or popup).

Another thing is all the code to make it look the right way in Internet Explorer. That code will give an portletException on the system.