// JScript File
function DetermineTrimester(inDay, inMonth, inYear)
{
    var curDate = new Date();
    var dueDate = new Date(inYear, inMonth-1, inDay-1);
    var day = 1000 * 60 * 60 * 24;
    var diff = (dueDate.getTime() - curDate.getTime())/day;
    var retVal;

    if (diff > 186)
    {
        retVal = 1;
    }
    else if (diff > 93)
    {
        retVal = 2;
    }
    else if (diff > 0)
    {
        retVal = 3;
    }
    else 
    {
        retVal = 4;
    }
    
   return retVal;
}