ErrStrs = {}; ErrStrs.USER_CANCELLED=localize("$$$/ScriptingSupport/Error/UserCancelled=User cancelled the operation"); try {var idquit = charIDToTypeID( 'quit' ); executeAction( idquit, undefined, DialogModes.ALL ); } catch(e){if (e.toString().indexOf(ErrStrs.USER_CANCELLED)!=-1) {;} else{alert(localize("$$$/ScriptingSupport/Error/CommandNotAvailable=The command is currently not available"));}}