WebODF - Render office documents in a browser
webodf.org
webodf.org
Edit: Found it: http://webodf.org/demo/ - should be a lot more prominent though, it's linked to in the footer as the "Gallery".
Also, did it really take all this while for someone to come up with javascript apis for ODF? Or are there existing tools out there? Surprising that there are no full featured web-based ODF editors even when the standard is completely DOM based and open, and quite old already. How hard is compiling a bunch of XML (what ODF is) to some HTML anyway?
Being built on XML, which is mostly just a syntax, doesn't really say anything about the semantics of display and editing. It's only slightly removed from saying that it should be easy to compile any programming language into any other because they're all just ASCII text files.