@Override
 protected void onDestroy() {
   // TODO Auto-generated method stub
   JshFragmentActivity jshactivit = (JshFragmentActivity) lam.getActivity("jsh");
   if (jshactivit != null) {
     jshactivit.onDes();
   }
   DhbFragmentActivity dhbactivit = (DhbFragmentActivity) lam.getActivity("dhb");
   if (dhbactivit != null) {
     dhbactivit.onDes();
   }
   CshFragmentActivity cshactivit = (CshFragmentActivity) lam.getActivity("csh");
   if (cshactivit != null) {
     cshactivit.onDes();
   }
   super.onDestroy();
 }