contract StandardToken is ERC20, SafeMath {
	
	  /* Actual balances of token holders */
	  mapping(address => uint) balances;
	

	  /* approve() allowances */
	  mapping (address => mapping (address => uint)) allowed;
	

	  /* Interface declaration */
	  function isToken() public constant returns (bool weAre) {
	    return true;
	  }
	

	  function transfer(address _to, uint _value) returns (bool success) {
	    balances[msg.sender] = safeSub(balances[msg.sender], _value);
	    balances[_to] = safeAdd(balances[_to], _value);
	    Transfer(msg.sender, _to, _value);
	    return true;
	  }
	

	  function transferFrom(address _from, address _to, uint _value) returns (bool success) {
	    uint _allowance = allowed[_from][msg.sender];
	

	    balances[_to] = safeAdd(balances[_to], _value);
	    balances[_from] = safeSub(balances[_from], _value);
	    allowed[_from][msg.sender] = safeSub(_allowance, _value);
	    Transfer(_from, _to, _value);
	    return true;
	  }
	

	  function balanceOf(address _owner) constant returns (uint balance) {
	    return balances[_owner];
	  }
	

	  function approve(address _spender, uint _value) private returns (bool success) {
	



	    require((_value == 0) || (allowed[msg.sender][_spender] == 0));
	

	    allowed[msg.sender][_spender] = _value;
	    return true;
	  }
	

	  function allowance(address _owner, address _spender) constant returns (uint remaining) {
	    return allowed[_owner][_spender];
	  }
	

	}
function isToken() public constant returns (bool weAre) {
	    return true;
	  }
/* Interface declaration */