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dashboard activation events and timers.

Hello all, I have a question regarding timers and activations events. This code is take from the dashboard programming guide:
http://developer.apple.com/documentation/AppleApplications/Conceptual/Dashboard_Tutorial/index.html

When Dashboard is shown, onshow is called. This function sets a timer in motion:


function onshow () {

    if (timer == null) {

        updateTime();

        timer = setInterval("updateTime();", 1000);

    }

}


When Dashboard is hidden, onhide halts the timer:


function onhide () {

    if (timer != null) {

        clearInterval(timer);

        timer = null;

    }

}


I have gotten this working fine with no problems, however my question is more of a conceptual one.

For example: If I have a timer that is supposed to update my widget every hour or half and hour, then unless the dashboard is active for that amount of time, my update will  never occur.
i.e. the interval is set to 360000 (1 hour) when the dashboard is activated, however if the dashboard is then deactivated before the hour is up, then my timer is cleared and the update doesn't happen.

perhaps someone can shed some light on this concept for me,
Thanks,
Micah Acinapura
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