function getNewDay(year, month, day)
{
    myNow   = new Date();
    myLastupdate = new Date( parseInt(year) ,
                       parseInt(month) - 1 ,
                       parseInt(day) );
    myMsec = myNow.getTime()-myLastupdate.getTime();
    return Math.floor(myMsec / (1000*60*60*24));
}