Maxwell now prints the circuit element values next to each element. I suppose this makes it somewhat more useful for demonstration purposes.
This is done using the WHATWG Canvas text API, which is newly supported in Firefox 3.1, thanks to Eric Butler. (Firefox 3.0 users will get the old behavior, where the element values are printed in the status area upon mouseover.)
Ubuntu Intrepid (8.10) users can get Firefox 3.1 alpha packages from Fabien Tassin's PPA.