TracBrowser: in r5358, wrapping the span directly around the <a> link was not a good idea, as clicking on the link would trigger both the normal GET query ''and'' the inplace XHR, useless in that case. So in the interim I'm wrapping both the <span> and the <a> in a <div>, which works great w.r.t. #5277 in Firefox and Opera, but has some issue with IExplorer: there, the expander icons are not visible anymore...
