It is not possible to do relative links in Daisy. There is good reason
for this, Daisy does not have the concept of a hierarchical structure
for documents. This allows multiple structures to be built to suit a
particular need. That is, you can create multiple navigation documents
describing different hierarchical structures of documents.
A side effect is that you can't do things like:
<a href="../anotherdir/afile.html"/>...</a>
You must link directly to the document you want using the protocol
daisy:{PAGE_ID}
When the document is published links will be generated according to the
current navigation document.
Ross