contract Ownable {
  address public owner;


  event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);


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

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


  /**
   * Allows the current owner to transfer control of the contract to a newOwner.
   */
  function transferOwnership(address newOwner) onlyOwner {
    require(newOwner != address(0));      
    OwnershipTransferred(owner, newOwner);
    owner = newOwner;
  }

}
/**
 * @title Ownable
 * The Ownable contract has an owner address, and provides basic authorization control
 */
function Ownable() {
    owner = msg.sender;
  }
/**
 * The Ownable constructor sets the original `owner` of the contract to the sender
 * account.
 */