Hi folks,
I've recently updated the metadata plugin[1] to avoid the property "data". That an issue I had when reading metadata from select-elements in Opera, because Opera already implements (at least parts) the whatwg spec. If you have similar problems or are just curious about the topic, this article is a good read: http://dev.opera.com/articles/view/making-legacy-pages-work-with-web-forms/
The metadata by default now searches for metadata in the class attribute (eg. class="{required:true}") and stores the found data in an attribute (or expando) called "metadata" (wohoo). That avoids the conflict with the whatwg attributes.
[1] http://dev.jquery.com/browser/trunk/plugins/metadata/lib/jQuery/metadata.js
-- Jörn Zaefferer http://bassistance.de
