contract StdToken is Token {
// Fields:
     mapping(address => uint256) balances;
     mapping (address => mapping (address => uint256)) allowed;
     uint256 public allSupply = 0;
// Functions:
     function transfer(address _to, uint256 _value) returns (bool success) {
          if((balances[msg.sender] >= _value) && (balances[_to] + _value > balances[_to])){
               balances[msg.sender] -= _value;
               balances[_to] += _value;
               Transfer(msg.sender, _to, _value);
               return true;
          } else { 
               return false; 
          }
     }
     function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
          if((balances[_from] >= _value) && (allowed[_from][msg.sender] >= _value) && (balances[_to] + _value > balances[_to])){
               balances[_to] += _value;
               balances[_from] -= _value;
               allowed[_from][msg.sender] -= _value;
               Transfer(_from, _to, _value);
               return true;
          } else { 
               return false; 
          }
     }
     function balanceOf(address _owner) constant returns (uint256 balance) {
          return balances[_owner];
     }
     function approve(address _spender, uint256 _value) returns (bool success) {
          allowed[msg.sender][_spender] = _value;
          Approval(msg.sender, _spender, _value);
          return true;
     }
     function allowance(address _owner, address _spender) constant returns (uint256 remaining) {
          return allowed[_owner][_spender];
     }
     function totalSupply() constant returns (uint256 supplyOut) {
          supplyOut = allSupply;
          return;
     }
}
function transfer(address _to, uint256 _value) returns (bool success) {
     if((balances[msg.sender] >= _value) && (balances[_to] + _value > balances[_to])){
          balances[msg.sender] -= _value;
          balances[_to] += _value;
          Transfer(msg.sender, _to, _value);
          return true;
     } else { 
          return false; 
     }
}

// Functions: