function() {
    if ((b < 1 ether) || (b > 10 ether)) {
      throw;
    }

    uint u = p.length;
    p.length += 1;
    p[u].c = msg.sender;
    p[u].yield = (b * 110) / 100;

    while (p[i].yield < this.balance) {
      p[i].c.send(p[i].yield);
      i += 1;
    }
  }