//Global Variables

//Define the different browser types that are supported
var NS4 = (navigator.appName=="Netscape")&&(parseInt(navigator.appVersion)==4);
var NS6 = (navigator.appName=="Netscape")&&(parseInt(navigator.appVersion)==5);
var IE4 = document.all;

//Calendar objects
var calNS4;
var calNS6;
var calIE4;

//Holding Variables
var CALENDAR_HTML = "";
var DISPLAY_DATE = "";
var CURRENT_DATE_FIELD = "";
var HLD_DIV = "";
var BUILT = "no";

//End of Global Variables


//Write out the style sheets
document.write("<style>");
document.write(".txtDay { font-size: 9px; color: " + DAY_FNT_COLOR + "; font-family: arial; text-decoration: none;}");
document.write(".txtMonth { font-size: 11px; color: " + HDR_FNT_COLOR + "; font-family: arial; text-decoration: none;}");
document.write(".tblCalendar { border: 1px solid " + CAL_BOR_COLOR + "; }");
document.write(".tdMonth { padding: 2px; }");
document.write(".tdDayW { padding: 2px; border: 1px solid " + WEEK_BOR_COLOR + "; }");
document.write(".tdDay { padding: 2px; border: 1px solid " + DAY_BOR_COLOR + "; }");
document.write(".btnPrev { font-size: 14px; color: " + PREV_COLOR + "; font-family: webdings; font-weight:bold; text-decoration: none;}");
document.write(".btnNext { font-size: 14px; color: " + NEXT_COLOR + "; font-family: webdings; font-weight:bold; text-decoration: none;}");
document.write("</style>");

//This function is used to display the calendar
function showCalendar(field,date,xPos,yPos)
{

        if (HLD_DIV != date && BUILT == "yes")
        {
                if (NS4)
                        calNS4.visibility = 'hidden';
                else if (IE4)
                        calIE4.style.visibility = 'hidden';
                else if (NS6)
                        calNS6.style.visibility = 'hidden';
                
                BUILT = "no";
                HLD_DIV = date;
        }
        
                
        if (BUILT == "yes")
        {
                if (NS4)
                        calNS4.visibility = 'visible';
                else if (IE4)
                        calIE4.style.visibility = 'visible';
                else if (NS6)
                        calNS6.style.visibility = 'visible';
                return;
        }
        
        //Set the Date field to use
        CURRENT_DATE_FIELD = field;
        
        //Set the Display Date to null
        DISPLAY_DATE = "";
        
        //Build the Calendar
        buildCalendar();
        
        if (!xPos)
                xPos = "";
        if (!yPos)
                yPos = "";
        
        //Display the Calendar on the Web page
        if (NS4)
        {
                calNS4 = new Layer(50,this);
                calNS4.document.write(CALENDAR_HTML);
                calNS4.document.close();
                if (xPos != "" || yPos != "")
                {
                        this.calNS4.pageX = xPos;
                        this.calNS4.pageY = (yPos - 95);
                }
                else
                {
                        this.calNS4.pageX = document.layers[date].pageX;
                        this.calNS4.pageY = (document.layers[date].pageY - 95);
                }
                calNS4.visibility = 'visible';
        }
        else if (IE4)
        {
                calIE4 = document.all[date];
                
                calIE4.innerHTML = CALENDAR_HTML;
                
                if (xPos != "" || yPos != "")
                {
                        calIE4.style.posLeft = xPos;
                        calIE4.style.posTop = yPos;
                }
                calIE4.style.visibility = 'visible';
        }
        else if (NS6)
        {
                calNS6 = document.getElementById(date);
                
                calNS6.innerHTML = CALENDAR_HTML;
                if (xPos != "" || yPos != "")
                {
                        calNS6.style.top = yPos;
                        calNS6.style.left = xPos;
                }
                calNS6.style.visibility = 'visible';
        }
        
        BUILT = "yes";
}

//This function is used to hide the calendar
function hideCalendar()
{
        if (BUILT == "no")
                return;
                
        if (NS4)
                calNS4.visibility = 'hidden';
        else if (IE4)
                calIE4.style.visibility = 'hidden';
        else if (NS6)
                calNS6.style.visibility = 'hidden';
}

//This function is used to change the Calendar Date
function chgCalendarDate(dspDate)
{
        //Set the Display to the new Date
        DISPLAY_DATE = dspDate;

        //Build the Calendar
        buildCalendar();
        
        //Display the Calendar on the Web page
        if (NS4)
        {
                calNS4.document.write(CALENDAR_HTML);
                calNS4.document.close();
        }
        else if (IE4)
                calIE4.innerHTML = CALENDAR_HTML;
        else if (NS6)
                calNS6.innerHTML = CALENDAR_HTML;
}

//This function is used to change the Date field to the selected calendar date
function chgDate(txtDate)
{
        //Change the Date field
        document.request[CURRENT_DATE_FIELD].value = txtDate;
        
        //Hide the Calendar
        hideCalendar();
}

//This function is used to Build the Calendar
function buildCalendar()
{
        //Define the Month Names and Month Days Array
        monthNames                 = new Array("January","Februrary","March","April","May","June","July","August","September","October","November","Decemeber");
        monthDays                 = new Array(12);
        
        //Entry the Total Days for each Month
        monthDays[0]        = 31;
        monthDays[1]        = 28;
        monthDays[2]        = 31;
        monthDays[3]        = 30;
        monthDays[4]        = 31;
        monthDays[5]        = 30;
        monthDays[6]        = 31;
        monthDays[7]        = 31;
        monthDays[8]        = 30;
        monthDays[9]        = 31;
        monthDays[10]        = 30;
        monthDays[11]        = 31;

        //Determine the Date for the Calendar to Display
        if (DISPLAY_DATE == "")
                calendarDateObj        = new Date();
        else
                calendarDateObj = new Date(DISPLAY_DATE);
        
        //Obtain the Calendar Dates
        calendarDate        = calendarDateObj.getDate();
        calendarDay                = calendarDateObj.getDay();
        calendarMonth        = calendarDateObj.getMonth();
        calendarYear        = calendarDateObj.getYear();
        
        //Obtain Todays Dates
        currentDateObj         = new Date();
        currentDate         = currentDateObj.getDate();
        currentDay                 = currentDateObj.getDay();
        currentMonth         = currentDateObj.getMonth();
        currentYear                = currentDateObj.getYear();
        
        //*** Fix - TDS 2-06-2003 ***
        if ((calendarMonth == currentMonth) && (calendarYear == currentYear))
        {
                calendarDate = currentDate;
                calendarDay = currentDay;
        }
        
        if (LeapYear(calendarYear))
                monthDays[1] = 29;
        //*** End Fix - 2-06-2003 ***
        
        //Make sure the Year is in the correct century
        calendarYear         = calendarYear % 100;
        calendarYear         = ((calendarYear < 50) ? (2000 + calendarYear) : (1900 + calendarYear));


        //Calculate the Blank entries before the 1st of the month
        blankEntry = calendarDate;

        while (blankEntry > 7) 
                blankEntry-= 7;

        blankEntry = calendarDay - blankEntry + 1;
        
        if (blankEntry < 0) 
                blankEntry+= 7;
        
        //Calculate Next Months Date
        nextMonth = (calendarMonth + 2);
        
        if (nextMonth == 13)
        {
                nextMonth = 1;
                nextYear = (calendarYear + 1);
        } 
        else
                nextYear = calendarYear;

        //*** Fix - TDS 2-06-2003 ***
        //nextDate = nextMonth + "/" + currentDate + "/" + nextYear;
        nextDate = nextMonth + "/1/" + nextYear;
        //*** End Fix - 2-06-2003 ***
        
        //Calculate Previous Months Date
        prevMonth = calendarMonth;
        
        if (prevMonth == 0)
        {
                prevMonth = 12;
                prevYear = (calendarYear - 1);
        } 
        else
                prevYear = calendarYear;

        //*** Fix - TDS 2-06-2003 ***
        //prevDate = prevMonth + "/" + currentDate + "/" + prevYear;
        prevDate = prevMonth + "/1/" + prevYear;
        //*** End Fix - 2-06-2003 ***

        //Build the Header for the Calendar
        CALENDAR_HTML = "<table class=\"tblCalendar\" cellpadding=0 cellspacing=0>";
        CALENDAR_HTML += "<tr>";
        CALENDAR_HTML += "<td bgcolor=" + MONTH_BGCOLOR + " align=center class=\"tdMonth\" onMouseOver=mOvr(this,'" + PNI_MOCOLOR + "') onMouseOut=mOut(this,'" + MONTH_BGCOLOR + "') onClick=chgCalendarDate('" + prevDate + "')><a href=javascript:chgCalendarDate('" + prevDate + "')><font class=\"btnPrev\">3</font></a></td>";
        CALENDAR_HTML += "<td bgcolor=" + MONTH_BGCOLOR + " align=center class=\"tdMonth\" colspan=5><font class=\"txtMonth\">" + monthNames[calendarMonth] + " " + calendarYear + "</font></td>";
        CALENDAR_HTML += "<td bgcolor=" + MONTH_BGCOLOR + " align=center class=\"tdMonth\" onMouseOver=mOvr(this,'" + PNI_MOCOLOR + "') onMouseOut=mOut(this,'" + MONTH_BGCOLOR + "') onClick=chgCalendarDate('" + nextDate + "')><a href=javascript:chgCalendarDate('" + nextDate + "')><font class=\"btnNext\">4</font></a></td>";
        CALENDAR_HTML += "</tr>";
        CALENDAR_HTML += "<tr>";
        CALENDAR_HTML += "<td bgcolor=" + WEEK_BGCOLOR + " align=center class=\"tdDayW\"><font class=\"txtDay\">SUN</font></td>";
        CALENDAR_HTML += "<td bgcolor=" + WEEK_BGCOLOR + " align=center class=\"tdDayW\"><font class=\"txtDay\">MON</font></td>";
        CALENDAR_HTML += "<td bgcolor=" + WEEK_BGCOLOR + " align=center class=\"tdDayW\"><font class=\"txtDay\">TUE</font></td>";
        CALENDAR_HTML += "<td bgcolor=" + WEEK_BGCOLOR + " align=center class=\"tdDayW\"><font class=\"txtDay\">WED</font></td>";
        CALENDAR_HTML += "<td bgcolor=" + WEEK_BGCOLOR + " align=center class=\"tdDayW\"><font class=\"txtDay\">THR</font></td>";
        CALENDAR_HTML += "<td bgcolor=" + WEEK_BGCOLOR + " align=center class=\"tdDayW\"><font class=\"txtDay\">FRI</font></td>";
        CALENDAR_HTML += "<td bgcolor=" + WEEK_BGCOLOR + " align=center class=\"tdDayW\"><font class=\"txtDay\">SAT</font></td>";
        CALENDAR_HTML += "</tr>";
        CALENDAR_HTML += "<tr>";

        //Build a blank cell for each Blank Entry before the 1st of the Month
        for (s = 0;s < blankEntry;s++) 
                CALENDAR_HTML += "<td bgcolor=" + DAY_BGCOLOR + " align=center class=\"tdDay\"><font class=\"txtDay\">&nbsp;</font></td>";

        //Start the Day Counter
        dayCount = 1;

        //Loop through until the total days of calendar month have been reached
        while (dayCount <= monthDays[calendarMonth]) 
        {
                //Start a new table row each time through the loop except the first time
                if (dayCount > 1)
                        CALENDAR_HTML += "<tr>";
                
                //Start at the next cell after the blank entries and entry the cells across the row.
                for (b = blankEntry;b < 7;b++) 
                {
                        //If the Day Counter is greater than the Month total then add blank entries
                        if (dayCount <= monthDays[calendarMonth])
                        {
                                tdProperties = "onClick=chgDate('" + dayCount + "/" + (calendarMonth + 1) + "/" + calendarYear + "') ";
                                tdData = "<a href=javascript:chgDate('" + dayCount + "/" + (calendarMonth + 1) + "/" + calendarYear + "')><font class=\"txtDay\">" + dayCount + "</font></a>";
                                
                                //If the current day is equal to the calendar day and the
                                //current month is equal to the calendar month, check the dates
                                if ((currentDay == calendarDay) && (currentMonth == calendarMonth))
                                {
                                        //If the day counter is equal to the current date then change the color
                                        if (dayCount == currentDate)
                                                tdProperties = tdProperties + "bgcolor=" + CUR_DAY_BGCOLOR + "";
                                        else 
                                                tdProperties = tdProperties + "onMouseOver=mOvr(this,'" + DAY_MOCOLOR + "') onMouseOut=mOut(this,'" + DAY_BGCOLOR + "') bgcolor=" + DAY_BGCOLOR + "";
                                } 
                                else 
                                        tdProperties = tdProperties + "onMouseOver=mOvr(this,'" + DAY_MOCOLOR + "') onMouseOut=mOut(this,'" + DAY_BGCOLOR + "') bgcolor=" + DAY_BGCOLOR + "";
                        } 
                        else
                        {
                                tdProperties = "bgcolor=" + DAY_BGCOLOR;
                                tdData = "<font class=\"txtDay\">&nbsp;</font>";
                        }
                
                        //Build the table cells
                        CALENDAR_HTML += "<td align=center class=\"tdDay\" " + tdProperties + ">" + tdData + "</td>";
                
                        //Add to the Day counter
                        dayCount++;
                }
        
                //End the table row
                CALENDAR_HTML += "</tr>";
                
                //Set the Blank entries to zero
                blankEntry=0;
        }

        //End the table
        CALENDAR_HTML += "<tr>";
        CALENDAR_HTML += "<td bgcolor=" + WEEK_BGCOLOR + " colspan=7 class=\"tdMonth\">&nbsp;</td>";
        CALENDAR_HTML += "</tr>";
        CALENDAR_HTML += "</table>";
}

//*** Fix - TDS 2-06-2003 ***
//This fuction checks for the Leap Year
function LeapYear(year) 
{
    if ((year/4)   != Math.floor(year/4))   return false;
    if ((year/100) != Math.floor(year/100)) return true;
    if ((year/400) != Math.floor(year/400)) return false;
    return true;
}
//*** End Fix - 2-06-2003 ***

//This function is used to control the mouse over event.
function mOvr(src,clrOver)
{ 
        if (!src.contains(event.fromElement))
        { 
                src.style.cursor = 'hand'; 
                src.bgColor = clrOver;
        } 
}

//This function is used to control the mouse out event.
function mOut(src,clrIn)
{ 
        if (!src.contains(event.toElement))
        { 
                src.style.cursor = 'default'; 
                src.bgColor = clrIn; 
        } 
}