// how reliable is this test?
    isIE = (document.all ? true : false);
    isDOM = (document.getElementById ? true : false);

    // Initialize arrays.
    var months = new Array("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
    var daysInMonth = new Array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
    var displayMonth = new Date().getMonth();
    var displayYear = new Date().getFullYear();
    var displayDivName;
    var displayElement;

    function getDays(month, year) 
    {
        // Test for leap year when February is selected..
        if (1 == month)
            return ((0 == year % 4) && (0 != (year % 100))) || (0 == year % 400) ? 29 : 28;
        else
            return daysInMonth[month];
    }

    function getToday() 
    {
        // Generate today's date.
        this.now = new Date();
        this.year = this.now.getFullYear();
        this.month = this.now.getMonth();
        this.day = this.now.getDate();
    }

    // Start with a calendar for today.
    today = new getToday();

    function newCalendar(eltName,attachedElement) 
    {
        if (attachedElement) 
        {
            if (displayDivName && displayDivName != eltName) 
                hideElement(displayDivName);
            displayElement = attachedElement;
        }
        
        displayDivName = eltName;
        today = new getToday();
        var parseYear = parseInt(displayYear + '');
        var newCal = new Date(parseYear,displayMonth,1);
        var day = -1;
        var startDayOfWeek = newCal.getDay();
        if ((today.year == newCal.getFullYear()) && (today.month == newCal.getMonth()))
        {
            day = today.day;
        }
        
        var intDaysInMonth = getDays(newCal.getMonth(), newCal.getFullYear());
        var daysGrid = makeDaysGrid(startDayOfWeek,day,intDaysInMonth,newCal,eltName);
        
        if (isIE) 
        {
            var elt = document.all[eltName];
            elt.innerHTML = daysGrid;
        } 
        else if (isDOM) 
        {
            var elt = document.getElementById(eltName);
            elt.innerHTML = daysGrid;
        } 
        else 
        {
            var elt = document.layers[eltName].document;
            elt.open();
            elt.write(daysGrid);
            elt.close();
        }
    }

    function incMonth(delta,eltName) 
    {
        displayMonth += delta;
        if (displayMonth >= 12) 
        {
            displayMonth = 0;
            incYear(1,eltName);
        } 
        else if (displayMonth <= -1) 
        {
            displayMonth = 11;
            incYear(-1,eltName);
        } 
        else 
        {
            newCalendar(eltName);
        }
    }

    function incYear(delta,eltName) 
    {
        displayYear = parseInt(displayYear + '') + delta;
        newCalendar(eltName);
    }

    function makeDaysGrid(startDay,day,intDaysInMonth,newCal,eltName) 
    {
        var daysGrid;
        var month = newCal.getMonth();
        var year = newCal.getFullYear();
        var isThisYear = (year == new Date().getFullYear());
        var isThisMonth = (day > -1);
        
        daysGrid = '<table style="border: 1px solid #CCCCCC" cellspacing=0 cellpadding=2><tr><td bgcolor=#ffffff nowrap>';
        daysGrid += '<font face="courier new, courier" size=2>';
        daysGrid += '<a href="javascript:hideElement(\'' + eltName + '\')">x</a>';
        daysGrid += '&nbsp;&nbsp;';
        daysGrid += '<a href="javascript:incMonth(-1,\'' + eltName + '\')">&laquo; </a>';
        daysGrid += '<b>';
        
        if (isThisMonth) 
        { 
            daysGrid += '<font color=red>' + months[month] + '</font>'; 
        }
        else 
        { 
            daysGrid += months[month]; 
        }

        daysGrid += '</b>';

        daysGrid += '<a href="javascript:incMonth(1,\'' + eltName + '\')"> &raquo;</a>';
        daysGrid += '&nbsp;&nbsp;&nbsp;';
        daysGrid += '<a href="javascript:incYear(-1,\'' + eltName + '\')">&laquo; </a>';
        daysGrid += '<b>';
    
        if (isThisYear) 
        {
            daysGrid += '<font color=red>' + year + '</font>'; 
        }
        else
        { 
            daysGrid += ''+year; 
        }
        
        daysGrid += '</b>';

        daysGrid += '<a href="javascript:incYear(1,\'' + eltName + '\')"> &raquo;</a><br>';
        daysGrid += '&nbsp;Su&nbsp;Mo&nbsp;Tu&nbsp;We&nbsp;Th&nbsp;Fr&nbsp;Sa&nbsp;<br>&nbsp;';
        
        var dayOfMonthOfFirstSunday = (7 - startDay + 1);
        for (var intWeek = 0; intWeek < 6; intWeek++) 
        {
            var dayOfMonth;
            for (var intDay = 0; intDay < 7; intDay++) 
            {
                dayOfMonth = (intWeek * 7) + intDay + dayOfMonthOfFirstSunday - 7;
                if (dayOfMonth <= 0) 
                {
                    daysGrid += "&nbsp;&nbsp;&nbsp;";
                }
                else if (dayOfMonth <= intDaysInMonth) 
                {
                    var color = "blue";
                    if (day > 0 && day == dayOfMonth) 
                        color="red";
                    daysGrid += '<a style="FONT-FAMILY: courier new, courier; FONT-SIZE: 13px;" href="javascript:setDay(';
                    daysGrid += dayOfMonth + ',\'' + eltName + '\')" ';
                    daysGrid += 'style="color:' + color + '">';
                    var dayString = dayOfMonth + "</a> ";
                    if (dayString.length == 6) 
                        dayString = '0' + dayString;
                    daysGrid += dayString;
                }
            }
            if (dayOfMonth < intDaysInMonth) 
                daysGrid += "<br>&nbsp;";
        }
        return daysGrid + "</td></tr></table>";
    }

    function setDay(day,eltName) 
    {
        displayElement.value = (displayMonth + 1) + "/" + day + "/" + displayYear;
        displayElement.focus();
        hideElement(eltName);
    }

    function addDaysToDate(myDate,days) 
    {
        return new Date(myDate.getTime() + days*24*60*60*1000);
    }
    
    function getDateInCorrectFormat(myDate) 
    {
        return (1+myDate.getMonth()) + "/" + myDate.getDate() + "/" + myDate.getFullYear();
    }