scw.js

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                if (scwDisabledDates[i].length != 2)
                {
                    if (scwShowRangeDisablingError)
                        alert(scwRangeDisablingError[0] +
                              scwDisabledDates[i] +
                              scwRangeDisablingError[1]);
                    scwPass = false;
                }
                else
                {
                    for (var j = 0; j < scwDisabledDates[i].length; j++)
                    {
                        if (!((typeof scwDisabledDates[i][j]
                                == 'object') &&
                              (scwDisabledDates[i][j].constructor
                                      == Date)))
                        {
                            if (scwShowRangeDisablingError)
                                alert(scwDateDisablingError[0] +
                                      scwDisabledDates[i][j] +
                                      scwDateDisablingError[1]);
                            scwPass = false;
                        }
                    }
                }

                if (scwPass &&
                    (scwDisabledDates[i][0] > scwDisabledDates[i][1])
                        )
                {
                    scwDisabledDates[i].reverse();
                }
            }
            else
            {
                if (scwShowRangeDisablingError)
                    alert(scwDateDisablingError[0] +
                          scwDisabledDates[i] +
                          scwDateDisablingError[1]);
            }
        }
    }

    // Calculate the number of months that the entered (or
    // defaulted) month is after the start of the allowed
    // date range.

    scwMonthSum = 12 * (scwSeedDate.getFullYear() - scwBaseYear) +
                  scwSeedDate.getMonth();

    // Set the drop down boxes.

    scwID('scwYears').options.selectedIndex = Math.floor(scwMonthSum / 12);
    scwID('scwMonths').options.selectedIndex = (scwMonthSum % 12);

    // Opera has a bug with this method of setting the selected index.
    // It requires the following work-around to force SELECTs to display
    // correctly.

    if (window.opera)
    {
        scwID('scwMonths').style.display = 'none';
        scwID('scwMonths').style.display = 'block';
        scwID('scwYears').style.display = 'none';
        scwID('scwYears').style.display = 'block';
    }

    // The bug is apparently known and "fixed for future versions"
    // but they say they aren't going to put the fix into the 9.x
    // series.

    // Check whether or not dragging is allowed and display drag handle
    // if necessary

    scwID('scwDrag').style.display =
    (scwAllowDrag)
            ? ((scwID('scwIFrame')) ? 'block' : 'table-row')
            : 'none';

    // Display the month

    scwShowMonth(0);

    // Position the calendar box

    // The object sniffing for Opera allows for the fact that Opera
    // is the only major browser that correctly reports the position
    // of an element in a scrollable DIV.  This is because IE and
    // Firefox omit the DIV from the offsetParent tree.

    scwTargetEle = scwEle;

    var offsetTop = parseInt(scwEle.offsetTop, 10) +
                    parseInt(scwEle.offsetHeight, 10),
            offsetLeft = parseInt(scwEle.offsetLeft, 10);

    if (!window.opera)
    {
        while (scwEle.tagName != 'BODY' && scwEle.tagName != 'HTML')
        {
            offsetTop -= parseInt(scwEle.scrollTop, 10);
            offsetLeft -= parseInt(scwEle.scrollLeft, 10);
            scwEle = scwEle.parentNode;
        }
        scwEle = scwTargetEle;
    }

    do {
        scwEle = scwEle.offsetParent;
        offsetTop += parseInt(scwEle.offsetTop, 10);
        offsetLeft += parseInt(scwEle.offsetLeft, 10);
    }
    while (scwEle.tagName != 'BODY' && scwEle.tagName != 'HTML');

    scwID('scw').style.top = offsetTop + 'px';
    scwID('scw').style.left = offsetLeft + 'px';

    if (scwID('scwIframe'))
    {
        scwID('scwIframe').style.top = offsetTop + 'px';
        scwID('scwIframe').style.left = offsetLeft + 'px';
        scwID('scwIframe').style.width = (scwID('scw').offsetWidth - 2) + 'px';
        scwID('scwIframe').style.height = (scwID('scw').offsetHeight - 2) + 'px';
        scwID('scwIframe').style.visibility = 'visible';
    }

    // Show it on the page

    scwID('scw').style.visibility = 'visible';

    // Ensure that Opera actually displays the value that is selected!

    scwID('scwYears').options.selectedIndex = scwID('scwYears').options.selectedIndex;
    scwID('scwMonths').options.selectedIndex = scwID('scwMonths').options.selectedIndex;

    var el = (scwSourceEle.parentNode)
            ? scwSourceEle.parentNode
            : scwSourceEle;

    if (typeof event == 'undefined')
    {
        el.addEventListener('click',
                scwStopPropagation,
                false);
    }
    else {
        if (el.attachEvent)
        {
            el.attachEvent('onclick', scwStopPropagation);
        }
        else {
            event.cancelBubble = true;
        }
    }
}

function scwHide()
{
    scwID('scw').style.visibility = 'hidden';
    if (scwID('scwIframe'))
    {
        scwID('scwIframe').style.visibility = 'hidden';
    }

    if (typeof scwNextAction != 'undefined' && scwNextAction != null)
    {
        scwNextActionReturn = scwNextAction();
        // Explicit null set to prevent closure causing memory leak
        scwNextAction = null;
    }
}

function scwCancel(scwEvt)
{
    if (scwClickToHide) scwHide();
    scwStopPropagation(scwEvt);
}

function scwStopPropagation(scwEvt)
{
    if (scwEvt.stopPropagation)
        scwEvt.stopPropagation();     // Capture phase
    else   scwEvt.cancelBubble = true;
    // Bubbling phase
}

function scwBeginDrag(event)
{
    var elementToDrag = scwID('scw');

    var deltaX = event.clientX,
            deltaY = event.clientY,
            offsetEle = elementToDrag;

    do {
        deltaX -= parseInt(offsetEle.offsetLeft, 10);
        deltaY -= parseInt(offsetEle.offsetTop, 10);
        offsetEle = offsetEle.offsetParent;
    }
    while (offsetEle.tagName != 'BODY' &&
           offsetEle.tagName != 'HTML');

    if (document.addEventListener)
    {
        document.addEventListener('mousemove',
                moveHandler,
                true);
        // Capture phase
        document.addEventListener('mouseup',
                upHandler,
                true);
        // Capture phase
    }
    else {
        elementToDrag.attachEvent('onmousemove',
                moveHandler);
        // Bubbling phase
        elementToDrag.attachEvent('onmouseup',
                upHandler);
        // Bubbling phase
        elementToDrag.setCapture();
    }

    scwStopPropagation(event);

    function moveHandler(scwEvt)
    {
        if (!scwEvt) scwEvt = window.event;

        elementToDrag.style.left = (scwEvt.clientX - deltaX) + 'px';
        elementToDrag.style.top = (scwEvt.clientY - deltaY) + 'px';

        if (scwID('scwIframe'))
        {
            scwID('scwIframe').style.left =
            (scwEvt.clientX - deltaX) + 'px';
            scwID('scwIframe').style.top =
            (scwEvt.clientY - deltaY) + 'px';
        }

        scwStopPropagation(scwEvt);
    }

    function upHandler(scwEvt)
    {
        if (!scwEvt) scwEvt = window.event;

        if (document.removeEventListener)
        {
            document.removeEventListener('mousemove',
                    moveHandler,
                    true);
            // Capture phase
            document.removeEventListener('mouseup',
                    upHandler,
                    true);
            // Capture phase
        }
        else {
            elementToDrag.detachEvent('onmouseup',
                    upHandler);
            // Bubbling phase
            elementToDrag.detachEvent('onmousemove',
                    moveHandler);
            // Bubbling phase
            elementToDrag.releaseCapture();
        }

        scwStopPropagation(scwEvt);
    }
}

function scwShowMonth(scwBias)
{// Set the selectable Month and Year
    // May be called: from the left and right arrows
    //                  (shift month -1 and +1 respectively)
    //                from the month selection list
    //                from the year selection list
    //                from the showCal routine
    //                  (which initiates the display).

    var scwShowDate = new Date(Date.parse(new Date().toDateString())),
            scwStartDate = new Date();

    // Set the time to the middle of the day so that the handful of
    // regions that have daylight saving shifts that change the day
    // of the month (i.e. turn the clock back at midnight or forward
    // at 23:00) do not mess up the date display in the calendar.

    scwShowDate.setHours(12);

    scwSelYears = scwID('scwYears');
    scwSelMonths = scwID('scwMonths');

    if (scwSelYears.options.selectedIndex > -1)
    {
        scwMonthSum = 12 * (scwSelYears.options.selectedIndex) + scwBias;
        if (scwSelMonths.options.selectedIndex > -1)
        {
            scwMonthSum += scwSelMonths.options.selectedIndex;
        }
    }
    else
    {
        if (scwSelMonths.options.selectedIndex > -1)
        {
            scwMonthSum += scwSelMonths.options.selectedIndex;
        }
    }

    scwShowDate.setFullYear(scwBaseYear + Math.floor(scwMonthSum / 12),
            (scwMonthSum % 12),
            1);

    // If the Week numbers are displayed, shift the week day names
    // to the right.
    scwID('scwWeek_').style.display =
    (scwWeekNumberDisplay)
            ? ((scwID('scwIFrame')) ? 'block' : 'table-cell')
            : 'none';

    if ((12 * parseInt((scwShowDate.getFullYear() - scwBaseYear), 10)) +
        parseInt(scwShowDate.getMonth(), 10) < (12 * scwDropDownYears) &&
        (12 * parseInt((scwShowDate.getFullYear() - scwBaseYear), 10)) +
        parseInt(scwShowDate.getMonth(), 10) > -1)
    {
        scwSelYears.options.selectedIndex = Math.floor(scwMonthSum / 12);
        scwSelMonths.options.selectedIndex = (scwMonthSum % 12);

        scwCurMonth = scwShowDate.getMonth();

        scwShowDate.setDate((((scwShowDate.
                getDay() - scwWeekStart) < 0) ? -6 : 1) +
                            scwWeekStart - scwShowDate.getDay());

        // This statement moved by Michael Cerveny to make version 3.55
        var scwCompareDateValue = new Date(scwShowDate.getFullYear(),
                scwShowDate.getMonth(),
                scwShowDate.getDate()).valueOf();

        scwStartDate = new Date(scwShowDate);

        var scwFoot = scwID('scwFoot');

        function scwFootOutput() {
            scwSetOutput(scwDateNow);
        }

        if (scwDisabledDates.length == 0)
        {
            if (scwActiveToday && scwParmActiveToday)