Most readers and iTunes can interpret the following lines in the content.opf:
Code:
<metadata>
<meta name="cover" content="coverimg-id"/>
...
</metadata>
<manifest>
<item id="coverimg-id" href="images/cover.jpeg" media-type="image/jpeg"/>
...
</manifest>
And you can add the following lines:
Code:
<manifest>
<item id="cover" href="cover.xhtml" media-type="application/xhtml+xml"/>
...
</manifest>
<guide>
<reference type="title-page" title="cover" href="44102_cover.xhtml" />
</guide>