Well the module installed and uninstalled again. The influence on the cms stopped, also probably because I changed some table to divs. But it also affects the search box, it seems to be settings for before and after that is read from the module CSS so now the module is deleted for now. The interesting thing is that it has an influence on my other site where I have a bought theme. That theme has a very much cleaned up CSS so that is perhaps the reason. Well I mark it as solved because I know the reason