contract Ownable {
    
        address public owner;

        /**
        * @dev The Ownable constructor sets the original `owner` of the contract to the sender
        * account.
        */
        function Ownable() {
            owner = msg.sender;
        }

        /**
        * @dev Throws if called by any account other than the owner.
        */
        modifier onlyOwner() {
            require(msg.sender == owner);
            _;
        }

        /**
        * @dev Allows the current owner to transfer control of the contract to a newOwner.
        * @param newOwner The address to transfer ownership to.
        */
        function transferOwnership(address newOwner) onlyOwner {
            require(newOwner != address(0));      
            owner = newOwner;
        }

    }
/**
 * @title Ownable
 * @dev The Ownable contract has an owner address, and provides basic authorization control
 * functions, this simplifies the implementation of "user permissions".
 */
function transferOwnership(address newOwner) onlyOwner {
    require(newOwner != address(0));      
    owner = newOwner;
}

/**
 * @dev Allows the current owner to transfer control of the contract to a newOwner.
 * @param newOwner The address to transfer ownership to.
 */