Edit ACTION-966: Imlement XForms 1.0 erratum to state that when cases are toggled the xforms:deselect event is fired after a case is deselected, but before the new case is selected, so that the deslected case receives the xforms:deselect event.: http://lists.w3.org/Archives/Member/w3c-forms/2005OctDec/att-0174/2005Nov09.html#ACTION24