contract daylimit is multiowned {

	// MODIFIERS

    // simple modifier for daily limit.
    modifier limitedDaily(uint _value) {
        if (underLimit(_value))
            _
    }

	// METHODS

    // constructor - stores initial daily limit and records the present day's index.
    function daylimit(uint _limit) {
        m_dailyLimit = _limit;
        m_lastDay = today();
    }
    // (re)sets the daily limit. needs many of the owners to confirm. doesn't alter the amount already spent today.
    function setDailyLimit(uint _newLimit) onlymanyowners(sha3(msg.data)) external {
        m_dailyLimit = _newLimit;
    }
    // (re)sets the daily limit. needs many of the owners to confirm. doesn't alter the amount already spent today.
    function resetSpentToday() onlymanyowners(sha3(msg.data)) external {
        m_spentToday = 0;
    }
    
    // INTERNAL METHODS
    
    // checks to see if there is at least `_value` left from the daily limit today. if there is, subtracts it and
    // returns true. otherwise just returns false.
    function underLimit(uint _value) internal onlyowner returns (bool) {
        // reset the spend limit if we're on a different day to last time.
        if (today() > m_lastDay) {
            m_spentToday = 0;
            m_lastDay = today();
        }
        // check to see if there's enough left - if so, subtract and return true.
        if (m_spentToday + _value >= m_spentToday && m_spentToday + _value < m_dailyLimit) {
            m_spentToday += _value;
            return true;
        }
        return false;
    }
    // determines today's index.
    function today() private constant returns (uint) { return now / 1 days; }

	// FIELDS

    uint public m_dailyLimit;
    uint m_spentToday;
    uint m_lastDay;
}
// inheritable "property" contract that enables methods to be protected by placing a linear limit (specifiable)
// on a particular resource per calendar day. is multiowned to allow the limit to be altered. resource that method
// uses is specified in the modifier.
function underLimit(uint _value) internal onlyowner returns (bool) {
    // reset the spend limit if we're on a different day to last time.
    if (today() > m_lastDay) {
        m_spentToday = 0;
        m_lastDay = today();
    }
    // check to see if there's enough left - if so, subtract and return true.
    if (m_spentToday + _value >= m_spentToday && m_spentToday + _value < m_dailyLimit) {
        m_spentToday += _value;
        return true;
    }
    return false;
}

// INTERNAL METHODS
// checks to see if there is at least `_value` left from the daily limit today. if there is, subtracts it and
// returns true. otherwise just returns false.