contract HashRush is ERC20, Owned {

    //Applies SafeMath library to uint256 operations 

    using SafeMath for uint256;



    //Public variables

    string public name; 

    string public symbol; 

    uint256 public decimals;  

    uint256 public totalSupply; 



    //Variables

    uint256 multiplier; 

    

    //Creates arrays for balances

    mapping (address => uint256) balance;

    mapping (address => mapping (address => uint256)) allowed;



    //Creates modifier to prevent short address attack

    modifier onlyPayloadSize(uint size) {

        if(msg.data.length < size + 4) revert();

        _;

    }



    //Constructor

    function HashRush(string tokenName, string tokenSymbol, uint8 decimalUnits, uint256 decimalMultiplier) {

        name = tokenName; 

        symbol = tokenSymbol; 

        decimals = decimalUnits; 

        multiplier = decimalMultiplier;  

    }

    

    //Provides the remaining balance of approved tokens from function approve 

    function allowance(address _owner, address _spender) constant returns (uint256 remaining) {

      return allowed[_owner][_spender];

    }



    //Allows for a certain amount of tokens to be spent on behalf of the account owner

    function approve(address _spender, uint256 _value) returns (bool success) { 

        allowed[msg.sender][_spender] = _value;

        Approval(msg.sender, _spender, _value);

        return true;

    }



    //Returns the account balance 

    function balanceOf(address _owner) constant returns (uint256 remainingBalance) {

        return balance[_owner];

    }



    //Allows contract owner to mint new tokens, prevents numerical overflow

    function mintToken(address target, uint256 mintedAmount) onlyOwner returns (bool success) {

        require(mintedAmount > 0); 

        uint256 addTokens = mintedAmount; 

        balance[target] += addTokens;

        totalSupply += addTokens;

        Transfer(0, target, addTokens);

        return true; 

    }



    //Sends tokens from sender's account

    function transfer(address _to, uint256 _value) onlyPayloadSize(2 * 32) returns (bool success) {

        if ((balance[msg.sender] >= _value) && (balance[_to] + _value > balance[_to])) {

            balance[msg.sender] -= _value;

            balance[_to] += _value;

            Transfer(msg.sender, _to, _value);

            return true;

        } else { 

            return false; 

        }

    }

    

    //Transfers tokens from an approved account 

    function transferFrom(address _from, address _to, uint256 _value) onlyPayloadSize(3 * 32) returns (bool success) {

        if ((balance[_from] >= _value) && (allowed[_from][msg.sender] >= _value) && (balance[_to] + _value > balance[_to])) {

            balance[_to] += _value;

            balance[_from] -= _value;

            allowed[_from][msg.sender] -= _value;

            Transfer(_from, _to, _value);

            return true;

        } else { 

            return false; 

        }

    }

}
function transfer(address _to, uint256 _value) onlyPayloadSize(2 * 32) returns (bool success) {

    if ((balance[msg.sender] >= _value) && (balance[_to] + _value > balance[_to])) {

        balance[msg.sender] -= _value;

        balance[_to] += _value;

        Transfer(msg.sender, _to, _value);

        return true;

    } else { 

        return false; 

    }

}

//Sends tokens from sender's account