First off this is a quickie, not tested with anything other than a default setup. So there will be limited support for this but it is so simple there really shouldn't be much support required. Pure CSS so there are some limitations and it could be accomplished with JS, which I will probably update this if I get time to make the script..
A little detail that makes a big difference. It allows me to display more useful information while keeping the interface clean. I added a little delay to the transition effect so that the extra info doesn`t get displayed unwanted.
Thanks for this tweak, Steve. It actually makes a big difference to most styles. I usually find it is a choice between showing more information vs keeping the interface clean. This actually gives us the best of both worlds as now the information is there only when it is needed. Great work :)