The jQuery folks are nice enough to provide a raw XML dump of their API documentation (http://api.jquery.com).
I wrote a quick macro to parse that data and store it as tiddlers:
http://svn.tiddlywiki.org/Trunk/contributors/FND/plugins/jQueryDocsImportMacro.js
Demo:
http://fnd.lewcid.org/tmp/jQueryAPI.html

http://groups.google.com/group/tiddlywikidev/browse_thread/thread/4974fa9717f669ab