contract MintableToken is StandardToken, Ownable {

  event Mint(address indexed to, uint256 amount);

  event MintFinished();

  bool public mintingFinished = false;

  address public saleAgent;

  modifier notLocked() {
    require(msg.sender == owner || msg.sender == saleAgent || mintingFinished);
    _;
  }

  function setSaleAgent(address newSaleAgnet) public {
    require(msg.sender == saleAgent || msg.sender == owner);
    saleAgent = newSaleAgnet;
  }

  function mint(address _to, uint256 _amount) public returns (bool) {
    require((msg.sender == saleAgent || msg.sender == owner) && !mintingFinished);
    
    totalSupply = totalSupply.add(_amount);
    balances[_to] = balances[_to].add(_amount);
    Mint(_to, _amount);
    return true;
  }

  /**
   * @dev Function to stop minting new tokens.
   * @return True if the operation was successful.
   */
  function finishMinting() public returns (bool) {
    require((msg.sender == saleAgent || msg.sender == owner) && !mintingFinished);
    mintingFinished = true;
    MintFinished();
    return true;
  }

  function transfer(address _to, uint256 _value) public notLocked returns (bool) {
    return super.transfer(_to, _value);
  }

  function transferFrom(address from, address to, uint256 value) public notLocked returns (bool) {
    return super.transferFrom(from, to, value);
  }

}
function finishMinting() public returns (bool) {
  require((msg.sender == saleAgent || msg.sender == owner) && !mintingFinished);
  mintingFinished = true;
  MintFinished();
  return true;
}

/**
 * @dev Function to stop minting new tokens.
 * @return True if the operation was successful.
 */