I don't think that is valid HTML (tr inside tr). I find that a lightbox can be a nice way of doing crud for a grid. When you click on a read only row, you show a bean editor in a lightbox
http://www.opensourcehunter.com/2010/06/25/40-javascript-lightbox-scriptsincluded-jquery-and-mootools/ But chances are you are too pragmatic (lazy) to implement that ;)
