exampleaudit.sol

contract Audits {
    address owner;
    mapping(address => uint) audits;

    function Audits() {
        owner = msg.sender;
    }

    function Approve(address addr) {
        if (owner != msg.sender) throw;
        audits[addr] = block.timestamp + 7 days;
    }

    function Revoke(address addr) {
        if (owner != msg.sender) throw;
        audits[addr] = 0;
    }

    function IsApproved(address addr) returns(bool) {
        if (msg.value < 10) throw;
        return block.timestamp < audits[addr];
    }

    function Withdraw() {
        if (owner != msg.sender) throw;
        owner.send(this.balance);
    }
}