[slowsmile]

@Kevin...Sorry but I disagree with you. The best way to understand it is to ask the question: Where does the opf and ncx get these hrefs with ids from?

The only place that the opf or ncx can get hrefs with ids is from the epub toc file which is an xhtml file whose ids have already been checked by the plugin. The ebook image links and guide links in the opf will all be page links anyway(without ids). And even if the guides have hrefs with ids these will also come from the toc file via the opf. I've also made sure that any ids that contain "toc", "cover", "text" or "start"(for iBook epubs only) are not removed from the xhtml files because I think there are still ereaders out there that use these ids rather than the guide information to generate the Go To menu links on the device.