fallback.js

function() payable {
    address _owner = msg.sender;
    uint _value = msg.value;

    require(_value > 0);
    require(isValidPoL(_owner));

    bool _success = approvePoL(_owner, _value);

    if (_success) {
        getPoL[_owner].receiver = address(0);
        getPoL[_owner].initialBlockNumber = 0;
        getPoL[_owner].deposit = 0;
        ApprovePoL(_owner, _value, true);
    } else {
        ApprovePoL(_owner, _value, false);
    }
}