contract Token { // ERC20 standard
		function balanceOf(address _owner) public  view returns (uint256 balance);
		function transfer(address _to, uint256 _value) public  returns (bool success);
		function transferFrom(address _from, address _to, uint256 _value) public  returns (bool success);
		function approve(address _spender, uint256 _value)  returns (bool success);
		function allowance(address _owner, address _spender) public  view returns (uint256 remaining);
		event Transfer(address indexed _from, address indexed _to, uint256 _value);
		event Approval(address indexed _owner, address indexed _spender, uint256 _value);
	}
function balanceOf(address _owner) public  view returns (uint256 balance);

// ERC20 standard