I have a few home-made modules that I would like to incorporate into my XOOPS site. However, some of the modules are only applicable to certain parts of my site. For example, if my users are using theme "X", I would like them to be able to see a block called "X", but otherwise, do not display that block. Also, on theme "A", I want to have blocks "A","B","C" displayed. Am I better off just writing my own block code and then including these blocks into the applicable theme.html files? OR Which navigation module would serve this purpose?