function decimals() public pure returns (uint8) { return 18; }


  constructor(string _name, string _symbol, uint256 _totalSupplyTokens) public {
    owner = msg.sender;
    tokensPerWei = 10;
    name = _name;
    symbol = _symbol;
    totalSupply = _totalSupplyTokens * (10 ** uint(decimals()));
    balances[msg.sender] = totalSupply;
    emit Transfer(address(0), msg.sender, totalSupply);
  }