Simple Escrow with Agent

Escrow.sol

contract Escrow {
  address buyer;
  address seller;
  address agent;

  function Escrow(address _agent, address _seller) {
    // In this simple example, the person sending money is the buyer and sets up the initial contract
    buyer = msg.sender;
    agent = _agent;
    seller = _seller;
  }

  function release() {
    if (msg.sender == agent)
      suicide(seller); // Send all funds to seller
    else
      throw;
  }
  function cancel() {
    if (msg.sender == agent)
      suicide(buyer); // Cancel escrow and return all funds to buyer
    else
      throw;
  }
}