  function checkFrozenWallet(address _from, uint _value) public view returns (bool) {
    return(
      _from==owner || 
      (!tokenFrozen && 
      (!frozenWallets[_from].isFrozen || 
       now>=frozenWallets[_from].frozenTime || 
       balanceOf[_from].sub(_value)>=frozenWallets[_from].frozenAmount))
    );
  }