var _oCalPopUp;
var _oCalInput;

var _sCalMonths         =       new     Array
                                                (
                                                        "Jan",
                                                        "Feb",
                                                        "Mar",
                                                        "Apr",
                                                        "May",
                                                        "Jun",
                                                        "Jul",
                                                        "Aug",
                                                        "Sep",
                                                        "Oct",
                                                        "Nov",
                                                        "Dec"
                                                );
                                                
var _sCalLongMonths     =       new     Array
                                                (
                                                        "January",
                                                        "February",
                                                        "March",
                                                        "April",
                                                        "May",
                                                        "June",
                                                        "July",
                                                        "August",
                                                        "September",
                                                        "October",
                                                        "November",
                                                        "December"
                                                );
                                                        
var _sCalDays           =       new Array
                                                (
                                                        "S", 
                                                        "M", 
                                                        "T", 
                                                        "W", 
                                                        "T", 
                                                        "F", 
                                                        "S"
                                                );
                                                
var _sCalLongDays       = new Array
                                                ( 
                                                        "Sunday",  
                                                        "Monday",  
                                                        "Tuesday",  
                                                        "Wednesday",  
                                                        "Thursday",  
                                                        "Friday",  
                                                        "Saturday" 
                                                );

/*
        _iCalFormat Formats
        0  - M/d/yy
        1  - M/d/yyyy
        2  - MM/dd/yy
        3  - MM/dd/yyyy
        4  - d/M/yy
        5  - d/M/yyyy
        6  - dd/MM/yy
        7  - dd/MM/yyyy
        8  - yy/M/d
        9  - yyyy/M/d
        10 - yy/MM/dd
        11 - yyyy/MM/dd
*/

//the following two arrays date formats and timeformats are not localized by design
var _sDateFormats       = new Array
                                                (
                                                        "M/d/yy",
                                                        "M/d/yyyy",
                                                        "MM/dd/yy",
                                                        "MM/dd/yyyy",
                                                        "d/M/yy",
                                                        "d/M/yyyy",
                                                        "dd/MM/yy",
                                                        "dd/MM/yyyy",
                                                        "yy/M/d",
                                                        "yyyy/M/d",
                                                        "yy/MM/dd",
                                                        "yyyy/MM/dd"
                                                );
                                                
var _sTimeFormats       = new Array
                                                (
                                                        "h:mm tt",
                                                        "hh:mm tt",
                                                        "H:mm",
                                                        "HH:mm",
                                                        "h:mm:ss tt",
                                                        "hh:mm:ss tt",
                                                        "H:mm:ss",
                                                        "HH:mm:ss"
                                                );
                                                
var _iCalStartDay       = ORG_DATE_START_DAY;
var _dCalMinDate        = new Date(1800, 4, 1);
var _dCalMaxDate        = new Date(2100, 11, 31);
var _sCalSeperator      = ORG_DATE_SEPARATOR;
var _iCalFormat         = ORG_DATE_FORMAT;

var _sShowWeekNumbers = ORG_SHOW_WEEK_NUMBER;
var iShowWeekCalWidth = 170;
var iNoWeekCalWidth   = 150;
var iCalHeight        = 162;


function InitCalendar(iDateFormat, sSeperator, iStartDay, dMinDate, dMaxDate) {
        _iCalFormat = iDateFormat;
        
        if (sSeperator)
        {
                _sCalSeperator = sSeperator;
        
                if (iStartDay)
                {
                        _iCalStartDay = iStartDay;
                        
                        if (dMinDate)
                        {
                                _dCalMinDate = dMinDate;
                                
                                if (dMaxDate)
                                {
                                        _dCalMaxDate = dMaxDate;
                                }
                        }
                }
        }
}


function LaunchCalendar(oInputElem, dInitDate)
{
        if ( isNaN(dInitDate) )
        {
                dInitDate = new Date();
        }
                
        _oCalInput = oInputElem;

        _oCalPopUp = window.createPopup();

        _oCalPopUp.document.body.innerHTML = DrawMonth(dInitDate, "parent.ReturnDate(this);", HILITE_NONE, null );

        var iCalWidth = _sShowWeekNumbers == "1" ? iShowWeekCalWidth : iNoWeekCalWidth;
                
        _oCalPopUp.show(0, 18, iCalWidth, iCalHeight, event.srcElement);
}

//
// Returns true if the return value is set to a valid date
// false otherwise.
//
function SetDateValues(oInput)
{
        oInput.value = Trim(oInput.value);

        var s = oInput.value;
        
        if (s.length > 0) {
                var D= ParseDate(s, _iCalFormat);
                
                if (D) {
                        oInput.value            = FormatDate(D);
                        oInput.returnValue      = FormatUtcDate(D);
                        return true;
                } else {
                        oInput.select();
                        return false;
                }
        } else {
                oInput.returnValue = "";
                return true;
        }
}


function GetFirstDayInCalendar(D)
{
        D.setDate(1);

        var i = D.getDay() - _iCalStartDay;

        if (i < 0)
        {
                i += 7;
        }

        if (i == 0)
        {
                return D;
        }

        D.setDate((i * -1) + 1);
        
        D.setHours(0);
        D.setMinutes(0);
        D.setSeconds(0);

        return D;
}

var HILITE_NONE = 0;
var HILITE_DAY = 1;
var HILITE_WEEK = 2;

///
/// Renders the control to display a month using the given day
///
/// D        - day around which the month should be rendered
/// sOnClick - function to fire when a date is clicked
/// hiliteCode - rules for hiliting the dates around the given day
///            - HILITE_NONE - no 'range' is hilited
///            - The day represented by 'hiliteDay' is hilited
///            - The week that contains 'hiliteDay' is hilited
/// hiliteDay  - The day to hilite
function DrawMonth(D, sOnClick, hiliteCode, hiliteDay )
{ 
        // Determine hiliting range
        var dHiliteStart = null;
        var dHiliteEnd   = null;
        
        switch( hiliteCode )
                {
                case HILITE_DAY:
                        dHiliteStart = new Date( hiliteDay );
                        dHiliteEnd   = new Date( hiliteDay );
                        break;
                        
                case HILITE_WEEK:
                        dHiliteStart = new GetFirstDayOfWeek( hiliteDay );   
                        dHiliteEnd   = new GetLastDayOfWeek( hiliteDay ); 
                        break;
                        
                default:
                        // Do nothing-- rather than let the user get an error, emulate HILITE_NONE.
                        break;
        }
        
        // We are stuck with a full DateTime even though we only want to
        // check at the date level.  So, adjust the hilite start/end times
        // to be at the start/end of the days, respectively.  Otherwise
        // our date comparisons won't work.
        if( dHiliteStart != null )
        {
                dHiliteStart.setMilliseconds( 0 );
                dHiliteStart.setSeconds( 0 );
                dHiliteStart.setMinutes( 0 );
                dHiliteStart.setHours( 0 );
        }
        if( dHiliteEnd != null )
        {
                dHiliteEnd.setMilliseconds( 999 );
                dHiliteEnd.setSeconds( 59 );
                dHiliteEnd.setMinutes( 59 );
                dHiliteEnd.setHours( 23 );
        }
        
        var tmpDate = new Date( D );
        tmpDate.setHours(0,0,0,0);
        
        var dToday              = new Date();
        
        dToday.setHours(0,0,0,0);
        
        var iToday              = dToday.valueOf();
        
        var dInitDate   = new Date(tmpDate.valueOf());
        var iInitMonth  = dInitDate.getMonth();

        tmpDate = GetFirstDayInCalendar(tmpDate);

        // write out the top navigation
        //
        var s = "<table cellpadding='0' cellspacing='0' style='border-collapse: collapse;table-layout:fixed'><tr><td style='text-align:center;border:1px solid #7b9ebd;height:18px;filter:progid:DXImageTransform.Microsoft.Gradient(GradientType=0,StartColorStr=#ffffff,EndColorStr=#cecfde);' colspan='";
        if( _sShowWeekNumbers == "1" )
        {
                // 7 days + 1 week number = 8 columns
                s += "8";
        }
        else
        {
                s += "7";
        }
        
        s+= "'><table cellpadding='0' cellspacing='0' style='table-layout:fixed'><tr height='18' style='font-family:verdana;font-size:8pt;cursor:hand;'>";

        var iValue = dInitDate.valueOf();

        // previous month navigation
        //
        if (tmpDate < _dCalMinDate)
        {
                s += "<td onclick='" + sOnClick + "' align='center' width='22' style='cursor: default;' nav='0'>&nbsp;</td>";
        }
        else
        {
                s += "<td onclick='" + sOnClick + "' align='center' width='22' d='" + iValue + "' nav='1' onmouseover='this.runtimeStyle.color = \"#e89f2e\";' onmouseout='this.runtimeStyle.color = \"\";'>&lt;</td>";
        }

        // year navigation
        //
        s += "<td onclick='" + sOnClick + "' align='center' width='104' d='" + iValue + "' nav='2' onmouseover='this.runtimeStyle.color = \"#e89f2e\";' onmouseout='this.runtimeStyle.color = \"\";'>" + _sCalMonths[iInitMonth] + " " + dInitDate.getFullYear() + "</td>";

        // next month navigation
        //
        var dLastDay = new Date(tmpDate.valueOf());

        dLastDay.setDate(dLastDay.getDate() + 42);

        if (dLastDay > _dCalMaxDate)
        {
                s += "<td onclick='" + sOnClick + "' align='center' width='22' style='cursor: default;' nav='0'>&nbsp;</td>";
        }
        else
        {
                s += "<td onclick='" + sOnClick + "' align='center' width='22' d='" + iValue + "' nav='1' onmouseover='this.runtimeStyle.color = \"#e89f2e\";' onmouseout='this.runtimeStyle.color = \"\";'>&gt;</td>";
        }

        s += "</tr></table></td></tr>";

        // write out the days of the week
        //
        s += "<tr>";

        var i   = 0;
        var ii  = _iCalStartDay;;

        if( _sShowWeekNumbers == "1" )
        {
                // Blank out area above week numbers
                s += "<td style='font-family:verdana;font-size:8pt;background-color:#eeeeee;text-align:center;border:1px solid #7b9ebd;width:20px;height:18px;cursor:default;' nav='0'></td>";
        }
        while (i < 7)
        {
                s += "<td style='font-family:verdana;font-size:8pt;background-color:#eeeeee;text-align:center;border:1px solid #7b9ebd;width:20px;height:18px;cursor:default;' nav='0'>" + _sCalDays[ii] + "</td>";
                
                i++;
                ii++;

                if (ii > 6)
                {
                        ii = 0
                }
        }

        s += "</tr>";

        // write out the main body of the calendar
        //
        var iDate       = 0;
        var sStyle      = "";

        for (i = 0; i < 6; i++)
        {
                s += "<tr onmouseover='if(event.srcElement.noHl!=1){event.srcElement.runtimeStyle.color = \"#e89f2e\";}' onmouseout='if(event.srcElement.noHl!=1){event.srcElement.runtimeStyle.color = \"\";}'>";

                if( _sShowWeekNumbers == "1" )
                {
                        // Write out week numbers; addition is to use the last day of the week to create the week number from, which is what outlook does.
                        // Otherwise Jan 1 is frequently 'week 53'
                        var iWeekNumber = getWeekNumber( GetLastDayOfWeek( tmpDate ) );
                        s += "<td noHl='1' style='cursor:default;font-family:verdana;font-size:8pt;color:#0000ff;text-align:center;background-color:#eeeeee;border:1px solid #7288ac;width:20px;height:18px;'>" + iWeekNumber + "</td>";
                }
                
                for(ii = 0; ii < 7; ii++)
                {
                        iDate   = tmpDate.getDate();
                        iValue  = tmpDate.valueOf();

                        sStyle = "font-family:verdana;font-size:8pt;text-align:center;border:1px solid #7288ac;width:20px;height:18px;";
                        
                        if (iValue == iToday)
                        {
                                sStyle += "border:2px solid #e89f2e;";
                        }
                        
                        var dayIsInThisMonth = ( tmpDate.getMonth() == iInitMonth );
                        
                        // Hilite the selected week if appropriate
                        if( ( hiliteCode == HILITE_DAY || hiliteCode == HILITE_WEEK ) &&
                    ( tmpDate.getTime( ) >= dHiliteStart.getTime( ) ) &&  ( tmpDate.getTime( ) <= dHiliteEnd.getTime( ) ) )
                        {
                                sStyle += "background-color:#cccccc;";
                                
                                // Ensure proper contrast so we can see the numbering.
                                if( !dayIsInThisMonth )
                                {
                                        sStyle += "color:#ffffff;";
                                }
                        }
                        else
                        {
                                if( !dayIsInThisMonth )
                                {
                                        sStyle += "color:#cccccc;";
                                }
                        }

                        if (tmpDate < _dCalMinDate || tmpDate > _dCalMaxDate)
                        {
                                s += "<td style='cursor:default;" + sStyle + "' nav='0'>&nbsp;</td>";
                        }
                        else if (tmpDate.getMonth() != iInitMonth)
                        {
                                s += "<td onclick='" + sOnClick + "' style='cursor:hand;" + sStyle + "' d='" + iValue + "'>" + iDate + "</td>";
                        }
                        else
                        {
                                s += "<td onclick='" + sOnClick + "' style='cursor:hand;" + sStyle + "' d='" + iValue + "'>" + iDate + "</td>";
                        }

                        tmpDate.setDate(iDate + 1);
                }

                s += "</tr>";
        }

        // 7 days + 1 week number = 8 columns
        s += getTodayBarHtml((_sShowWeekNumbers == "1" ? "8" : "7"), sOnClick);
        s += "</table>";

        return s; 
}

// Build the bottom "Today" Bar
function getTodayBarHtml(iColSpan, sOnClick)
{
        var dToday = new Date();
        
        var s = "<tr height='18'><td style='padding-top:1px;cursor:hand;border:1px solid #000000;font-family:verdana;font-size:8pt;text-align:Center;' colspan='";
        
        s += iColSpan; 
        s += "' onclick='" + sOnClick + "' d='" + dToday.valueOf() + "' onmouseover='runtimeStyle.color = \"#e89f2e\";' onmouseout='runtimeStyle.color = \"\";'><div style='height:16px;filter:progid:DXImageTransform.Microsoft.Gradient(GradientType=0,StartColorStr=#ffffff,EndColorStr=#cecfde);'>";
        s += "Today: " + FormatDate(dToday);
        return s + "</div></td></tr>";
}


// Returns the week number the date falls on
// oDate - A Date Object with any given date to calculate a week number for.
function getWeekNumber( oDate )
{
        // Get the beginning of the year.
        var oYearStart = new Date( oDate.valueOf( ) );
        oYearStart.setMonth( 0, 1 );  // January is month 0
        oYearStart.setHours( 0, 0, 0, 0 );
        
        var iMSSinceYearStart = oDate.valueOf( ) - oYearStart.valueOf( );
        
        var fWeeksSinceYearStart = iMSSinceYearStart / 604800000;  // 1000 / 60 / 60 / 24 / 7;
        
        // Drop the extra decimal digits to make a whole number.
        var iWeeksSinceYearStart = Math.ceil( fWeeksSinceYearStart );
        
        if( iWeeksSinceYearStart == 0 )
        {
                // Deal with case where Jan 1 is on a Monday; this formula will produce 0 because jan 1 - jan 1 = 0.
                iWeeksSinceYearStart = 53;
        }
        
        return iWeeksSinceYearStart;
}


function DrawYear(D, sOnClick)
{
        var tmpDate = new Date( D );
        tmpDate.setMonth(0);
        tmpDate.setDate(1);
        
        // write out the top navigation
        //
        var s = "<table cellpadding='0' cellspacing='0' width='";
        s += _sShowWeekNumbers == "1" ? iShowWeekCalWidth : iNoWeekCalWidth;
        s += "' style='border-collapse:collapse;table-layout:fixed'><tr><td style='font-family:verdana;font-size:8pt;text-align:center;border:1px solid #7b9ebd;height:18px;filter:progid:DXImageTransform.Microsoft.Gradient(GradientType=0,StartColorStr=#ffffff,EndColorStr=#cecfde);' colspan='3'><table cellpadding='0' cellspacing='0' style='table-layout:fixed'><tr height='18' style='font-family:verdana;font-size:8pt;cursor:hand;'>";

        var iValue      = tmpDate.valueOf();
        var iYear       = tmpDate.getFullYear();

        // previous year navigation
        //
        if (iYear <= _dCalMinDate.getFullYear())
                s += "<td align='center' width='22' style='cursor:default;' nav='0'>&nbsp;</td>";
        else
                s += "<td onclick='" + sOnClick + "' align='center' width='22' d='" + iValue + "' nav='2' onmouseover='this.runtimeStyle.color = \"#e89f2e\";' onmouseout='this.runtimeStyle.color = \"\";'>&lt;</td>";

        // write out the year 
        s += "<td align='center' style='cursor:default;' nav='0'>" + iYear + "</td>";

        // next year navigation
        //
        if (iYear >= _dCalMaxDate.getFullYear())
                s += "<td align='center' width='22' style='cursor:default;' nav='0'>&nbsp;</td>";
        else
                s += "<td onclick='" + sOnClick + "' align='center' width='22' d='" + iValue + "' nav='2' onmouseover='this.runtimeStyle.color = \"#e89f2e\";' onmouseout='this.runtimeStyle.color = \"\";'>&gt;</td>";

        s += "</tr></table></td></tr>";

        // write out the months
        //
        var iMonth = 0;

        for (i = 0; i < 4; i++)
        {
                s += "<tr style='height:" + (31 + (i % 2)) + "px;' onmouseover='event.srcElement.runtimeStyle.color = \"#e89f2e\";' onmouseout='event.srcElement.runtimeStyle.color = \"\";'>";

                for(ii = 0; ii < 3; ii++)
                {
                        iMonth  = tmpDate.getMonth();
                        iValue  = tmpDate.valueOf();

                        s += "<td onclick='" + sOnClick + "' style='font-family:verdana;font-size:8pt;text-align:center;border:1px solid #7288ac;cursor:hand;' d='" + iValue + "' nav='1'>" + _sCalMonths[iMonth] + "</td>";

                        tmpDate.setMonth(iMonth + 1);
                }

                s += "</tr>";
        }

        s += getTodayBarHtml(3, sOnClick);
        s += "</table>";

        return s;
}


function ReturnDate(o)
{
        var D = new Date(parseInt(o.d, 10));
        
        if (o.nav)
        {
                switch (parseInt(o.nav, 10))
                {
                        case 1:

                                var m = D.getMonth();
                                                
                                var d = D.getDate();

                                var a = new Array(31,28,31,30,31,30,31,31,30,31,30,31);

                                if (D.getYear() % 4 == 0)
                                {
                                        a[1] = 29;
                                }
                                
                                if (o.innerHTML == "&lt;")
                                {
                                        m--;
                                        
                                        if ((m > 0) && (d > a[m]))
                                        {                                               
                                                D.setDate(a[m]);
                                        }
                                        
                                        D.setMonth(m);
                                }
                                else if (o.innerHTML == "&gt;")
                                {                                       
                                        m++;
                                        
                                        if ((m < 12) && (d > a[m]))
                                        {                                               
                                                D.setDate(a[m]);
                                        }
                                        
                                        D.setMonth(m);
                                }

                                _oCalPopUp.document.body.innerHTML = DrawMonth(D, "parent.ReturnDate(this);", HILITE_NONE, null);
                                
                                break;

                        case 2:

                                if (o.innerHTML == "&lt;")
                                {
                                        D.setYear(D.getFullYear() - 1);
                                }
                                else if (o.innerHTML == "&gt;")
                                {
                                        D.setYear(D.getFullYear() + 1);
                                }

                                _oCalPopUp.document.body.innerHTML = DrawYear(D, "parent.ReturnDate(this);");
                                
                                break;
                }
        }
        else
        {
                _oCalInput.value                = FormatDate(D);
                _oCalInput.returnValue  = FormatUtcDate(D);
                _oCalInput.fireEvent("onchange");
                _oCalInput.focus(); // added 2006-02-22
                _oCalPopUp.hide();
        }
}


function ParseDate(s) {
        try {
                var S= "";
                
                var i;
                for (i = 0; i < s.length; i++) {
                        switch (s.charAt(i)) {
                                case "/": S = "/"; break;
                                case ".": S = "."; break;
                                case "-": S = "-"; break;
                        }

                        if (S.length > 0) {
                                break;
                        }
                }
                
                var c;
                var iS = 0;
                for (i = 0; i < s.length; i++) {
                        c = s.charAt(i);
                        if (c != S && !IsValidNumber(c) )
                        {
                                throw  "You must enter a valid date." ;
                        }
                        if (c == S)
                        {
                                iS++;
                        }
                }
                
                if (iS != 2)
                {
                        throw  "You must enter a valid date." ;
                }

                
                var m, d, y;
                if (_iCalFormat < 4)
                {
                        m = s.substring(0, s.indexOf(S));
                        d = s.substring(m.length + 1, s.indexOf(S, m.length + 1));
                        y = s.substr(m.length + d.length + 2);
                }
                else if (_iCalFormat > 3 && _iCalFormat < 8)
                {
                        d = s.substring(0, s.indexOf(S));
                        m = s.substring(d.length + 1, s.indexOf(S, d.length + 1));
                        y = s.substr(m.length + d.length + 2);
                }
                else
                {
                        y = s.substring(0, s.indexOf(S));
                        m = s.substring(y.length + 1, s.indexOf(S, y.length + 1));
                        d = s.substr(m.length + y.length + 2);
                }
                
                D= IsValidDate(d, m, y);

                return D;
        }
        catch(e)
        {
                alert(e);
                
                return false;
        }
}

function IsValidDate(d, m, y) {
        var a= new Array(31,28,31,30,31,30,31,31,30,31,30,31);

        m= parseInt(m, 10) - 1;
        if (m < 0 || m > 11) {
                throw "You must enter a valid date." ;
        }
        
        y= parseInt(PadYear(y), 10);
        if (y < _dCalMinDate.getFullYear() || y > _dCalMaxDate.getFullYear()) {
                throw "You must enter a valid date." ;
        }
        if (y % 4 == 0) {
                a[1] = 29;
        }

        d= parseInt(d, 10);
        if (d == 0 || d > a[m]) {
                throw "You must enter a valid date." ;
        }

        var D= new Date(y, m, d);
        if ((D < _dCalMinDate) || (D > _dCalMaxDate)) {
                throw  "You must enter a valid date." ;
        }
        return D;
}


function ParseUtcDate(s)
{
        if (s.length > 10)
        {
                // Date + Time
                return new Date(parseInt(s.substr(0, 4), 10), (parseInt(s.substr(5, 2), 10) - 1), parseInt(s.substr(8, 2), 10), parseInt(s.substr(11, 2), 10), parseInt(s.substr(14, 2), 10), parseInt( s.substr( 17, 2), 10 ));
        }
        else
        {
                // date only, no time info
                //
                return new Date(parseInt(s.substr(0, 4), 10), (parseInt(s.substr(5, 2), 10) - 1), parseInt(s.substr(8, 2), 10));
        }
}


function FormatDate(D)
{
        var m = D.getMonth() + 1;
        var d = D.getDate();
        var y = D.getFullYear();

        if (_iCalFormat % 2 == 0 )
        {
                y = String(y).substr(2, 2);
        }

        if (_iCalFormat == 2 || _iCalFormat == 3 || _iCalFormat == 6 || _iCalFormat == 7 || _iCalFormat == 10 || _iCalFormat == 11)
        {
                m = PadNumber(m);
                d = PadNumber(d);
        }

        if (_iCalFormat < 4)
        {
                return m + _sCalSeperator + d + _sCalSeperator + y;
        }

        if (_iCalFormat > 3 && _iCalFormat < 8)
        {
                return d + _sCalSeperator + m + _sCalSeperator + y;
        }

        return y + _sCalSeperator + m + _sCalSeperator + d;
}


function FormatUtcDate(D)
{
        return String(D.getFullYear()) + "-" + PadNumber( String(D.getMonth() + 1)) + "-" + PadNumber(String(D.getDate())) + "T" + PadNumber(String(D.getHours())) + ":" + PadNumber(String(D.getMinutes())) + ":00";
}


function PadNumber(s)
{
        if (String(s).length == 1)
        {
                return "0" + s;
        }

        return s;
}


function PadYear(s)
{
        s = new String(s);

        if (s.length == 4)
        {
                return s;
        }
        
        if (s.length == 1)
        {
                s = 0 + s;
        }

        if (parseInt(s, 10) < 21)//30
        {
                return "20" + s;
        }

        return "19" + s;
}


function FormatUtcDateTime(s)
{
        var f = 0;
        var hh = parseInt(s.substr(11, 2), 10);
        var mm = s.substr(14, 2);
        var ss = s.substr(17, 2);
        
        var tt = "";

        switch (f)
        {
                case 0: case 1: case 4: case 5:
                
                        if (hh == 12)
                        {
                                tt      = " PM";
                        }
                        else if (hh > 12)
                        {
                                hh      = hh - 12;
                                tt      = " PM";
                        }
                        else
                        {
                                tt      = " AM";
                        }
                        
                        break;
        }
        
        switch (f)
        {
                case 1: case 3: case 5: case 7:
                        
                        hh = PadNumber(hh);
                        
                        break;
        }
        
        if (f > 3)
        {
                return FormatDate(ParseUtcDate(s)) + " " + hh + ":" + mm + ":" + ss + tt;
        }
        else
        {
                return FormatDate(ParseUtcDate(s)) + " " + hh + ":" + mm + tt;
        }
}

// Returns the first day of the week that contains the given date
function GetFirstDayOfWeek( D )
{
        var daysToSubtract = (D.getDay() + 7 - _iCalStartDay) % 7;
        return new Date(D.getTime() - (daysToSubtract * 24 * 60 * 60 * 1000));
}

// Returns the last day of the week that contains the given date
function GetLastDayOfWeek( D )
{
        var firstDay = GetFirstDayOfWeek( D );
        return new Date( firstDay.getTime( ) + ( 6 * 24 * 60 * 60 * 1000 ) );  // Add 6 days to the first day of the week
}


function IsValidNumber(n)
{
        if (n == null)
                return false;

        var l = n.length;

        if (l == 0)
                return false;

        var s = 0;

        if (n.charAt(0) == "-")
                s = 1;

        var i,c;
        
        for (i = s; i < l; i++)
        {
                c = n.charCodeAt(i);

                if (c < 46 || c > 57)
                        return false;
        }

        return true;
}