Recommended wrapper libraries

In the last year, I've settled on two JavaScript browser wrapper libraries that satisfy almost all my needs to achieve browser version/platform independency: Sarissa handles XML, XSLT and XMLHTTPRequest and the X library handles a large number of DHTML- and DOM-related functions.

Note: I decided not to use a framework library. If you want to go down that route, these two would be way too low-level.