  function createTokens(uint256 _value) public
    returns (bool success) {
    require (msg.sender == owner);
    if (_value > 0) {
      if (_value > safeSub (MAX_TOKEN_COUNT, tokenCount)) return false;
      accounts [msg.sender] = safeAdd (accounts [msg.sender], _value);
      tokenCount = safeAdd (tokenCount, _value);
	  emit Transfer(address(0), msg.sender, _value);
	  return true;
    }
	  return false;
  }