var todayDate = new Date();
var curDate = new Date();
var minDate = new Date();
var maxDate = new Date();
var ppcX = 50;
var ppcY = 50;
var IsCalendarVisible;
var calfrmName;
var maxYearList;
var minYearList;
var curImg;
var curDateBox;
var hideDropDowns;
var IsUsingMinMax;
var FuncsToRun;
var img_del;
var img_close;
var names     = new makeArray0('01','02','03','04','05','06','07','08','09','10','11','12');
var days      = new makeArray0(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
var dow       = new makeArray0('S','M','T','W','T','F','S');
var kstrDateSeparator = "/";

var ppcIE=((navigator.appName == "Microsoft Internet Explorer") || ((navigator.appName == "Netscape") && (parseInt(navigator.appVersion)==5)));
var ppcNN6=((navigator.appName == "Netscape") && (parseInt(navigator.appVersion)==5));
var ppcNN=((navigator.appName == "Netscape")&&(document.layers));

img_del=new Image();
img_del.src="../script/cal/abn_del_small.gif";
img_close=new Image();
img_close.src="../script/cal/abn_close_small.gif";

minYearList=todayDate.getFullYear()-10;
maxYearList=todayDate.getFullYear()+2;
IsCalendarVisible=false;

//---------------------------------------------------
function getOffsetLeft (el) {
    var ol = el.offsetLeft;
    while ((el = el.offsetParent) != null)
        ol += el.offsetLeft;
    return ol;
}

//---------------------------------------------------
function getOffsetTop (el) {
    var ot = el.offsetTop;
    while((el = el.offsetParent) != null)
        ot += el.offsetTop;
    return ot;
}

//---------------------------------------------------
function showCalendar(frmName, dteBox,btnImg,sety,setm, hideDrops, MnDt, MnMo, MnYr, MxDt, MxMo, MxYr,runFuncs) {
    hideDropDowns = hideDrops;
    FuncsToRun = runFuncs;
    calfrmName = frmName;
    if (IsCalendarVisible) {
        hideCalendar();
    }
    else {
        if (document.images['calbtn1']!=null ) document.images['calbtn1'].src=img_del.src;
        if (document.images['calbtn2']!=null ) document.images['calbtn2'].src=img_close.src;

        if (hideDropDowns) {toggleDropDowns('hidden');}
        if ((MnDt!=null) && (MnMo!=null) && (MnYr!=null) && (MxDt!=null) && (MxMo!=null) && (MxYr!=null)) {
            IsUsingMinMax = true;
            minDate.setDate(MnDt);
            minDate.setMonth(MnMo-1);
            minDate.setFullYear(MnYr);
            maxDate.setDate(MxDt);
            maxDate.setMonth(MxMo-1);
            maxDate.setFullYear(MxYr);
        }
        else {
            IsUsingMinMax = false;
        }

        curImg = btnImg;
        curDateBox = dteBox;
        if ( ppcIE ) {
            ppcX = getOffsetLeft(document.images[btnImg]);
            // ppcX = 3
            ppcY = getOffsetTop(document.images[btnImg]) + document.images[btnImg].height;
        }
        else if (ppcNN){
            ppcX = document.images[btnImg].x;
            // ppcX = 3
            ppcY = document.images[btnImg].y + document.images[btnImg].height;
        }
        if ((sety!=null) && (setm!=null)) {
          domlay('popupcalendar',1,ppcX,ppcY,Calendar(setm,sety));
        }
        else {
          domlay('popupcalendar',1,ppcX,ppcY,Calendar(todayDate.getMonth(),todayDate.getFullYear()));
        }
        //domlay('popupcalendar',1,ppcX,ppcY,Calendar(curDate.getMonth(),curDate.getFullYear()));
        IsCalendarVisible = true;
    }
}

//---------------------------------------------------
function toggleDropDowns(showHow){
    var i; var j;
    for (i=0;i<document.forms.length;i++) {
        for (j=0;j<document.forms[i].elements.length;j++) {
            if (document.forms[i].elements[j].tagName == "SELECT") {
                if (document.forms[i].name != "Cal")
                    document.forms[i].elements[j].style.visibility=showHow;
            }
        }
    }
}

//---------------------------------------------------
function hideCalendar(){
    domlay('popupcalendar',0,ppcX,ppcY);
    IsCalendarVisible = false;
    if (hideDropDowns) {toggleDropDowns('visible');}
}

//---------------------------------------------------
function calClick() {
        window.focus();
}

//---------------------------------------------------
function domlay(id,trigger,lax,lay,content) {
  // Cross browser Layer visibility / Placement Routine
  // Layer visible
    if (trigger=="1"){
      if (document.layers) document.layers[''+id+''].visibility = "show"
      else if (document.all) document.all[''+id+''].style.visibility = "visible"
      else if (document.getElementById) document.getElementById(''+id+'').style.visibility = "visible"
    }
    // Layer hidden
    else if (trigger=="0"){
      if (document.layers) document.layers[''+id+''].visibility = "hide"
      else if (document.all) document.all[''+id+''].style.visibility = "hidden"
      else if (document.getElementById) document.getElementById(''+id+'').style.visibility = "hidden"
    }

    // Set horizontal position
    if (lax){
      if (document.layers){document.layers[''+id+''].left = lax}
      else if (document.all){document.all[''+id+''].style.left=lax}
      else if (document.getElementById){document.getElementById(''+id+'').style.left=lax+"px"}
    }

    // Set vertical position
    if (lay){
      if (document.layers){document.layers[''+id+''].top = lay}
      else if (document.all){document.all[''+id+''].style.top=lay}
      else if (document.getElementById){document.getElementById(''+id+'').style.top=lay+"px"}
    }

    // change content
    if (content){
      if (document.layers){
        sprite=document.layers[''+id+''].document;
        // add father layers if needed! document.layers[''+father+'']...
        sprite.open();
        sprite.write(content);
        sprite.close();
      }
      else if (document.all) document.all[''+id+''].innerHTML = content;
      else if (document.getElementById){
        rng = document.createRange();
        el = document.getElementById(''+id+'');
        rng.setStartBefore(el);
        htmlFrag = rng.createContextualFragment(content)
        while(el.hasChildNodes()) el.removeChild(el.lastChild);
        el.appendChild(htmlFrag);
      }
    }
}

//---------------------------------------------------
function Calendar(whatMonth,whatYear) {
    var output = '';
    var datecolwidth;
    var startMonth;
    var startYear;
    startMonth=whatMonth;
    startYear=whatYear;
    curDate.setMonth(whatMonth);
    curDate.setFullYear(whatYear);
    curDate.setDate(todayDate.getDate());
    if (ppcNN6) {
        output += '<form name="Cal"><table width="185" border="3" class="cal-Table" cellspacing="0" cellpadding="0"><tr>';
    }
    else {
        output += '<table width="185" border="3" class="cal-Table" cellspacing="0" cellpadding="0"><form name="Cal"><tr>';
    }

    output += '<td class="cal-HeadCell" align="center" width="100%"><a href="javascript:clearDay();"><img name="calbtn1" src="' + img_del.src + '" border="0" width="12" height="10"></a>  <a href="javascript:scrollMonth(-1);" class="cal-DayLink"><FONT COLOR="#ffffff"><</FONT></a> <SELECT class="cal-TextBox" NAME="cboMonth" onChange="changeMonth();">';
    for (month=0; month<12; month++) {
        if (month == whatMonth) output += '<OPTION VALUE="' + month + '" SELECTED>' + names[month] + '<\/OPTION>';
        else                output += '<OPTION VALUE="' + month + '">'          + names[month] + '<\/OPTION>';
    }
    output += '<\/SELECT><SELECT class="cal-TextBox" NAME="cboYear" onChange="changeYear();">';
    for (year=minYearList; year<maxYearList; year++) {
        if (year == whatYear) output += '<OPTION VALUE="' + year + '" SELECTED>' + year + '<\/OPTION>';
        else              output += '<OPTION VALUE="' + year + '">'          + year + '<\/OPTION>';
    }
    output += '<\/SELECT> <a href="javascript:scrollMonth(1);" class="cal-DayLink"><FONT COLOR="#ffffff">></FONT></a>  <a href="javascript:hideCalendar();"><img name="calbtn2" src="' + img_close.src +'" border="0" width="12" height="10"></a><\/td><\/tr><tr><td width="100%" align="center">';
    firstDay = new Date(whatYear,whatMonth,1);
    startDay = firstDay.getDay();
    if (((whatYear % 4 == 0) && (whatYear % 100 != 0)) || (whatYear % 400 == 0))
         days[1] = 29;
    else
         days[1] = 28;
    output += '<table width="185" cellspacing="1" cellpadding="2" border="0"><tr>';
    for (i=0; i<7; i++) {
        if (i==0 || i==6) {
            datecolwidth="15%"
        }
        else
        {
            datecolwidth="14%"
        }
        output += '<td class="cal-HeadCell" width="' + datecolwidth + '" align="center" valign="middle"><FONT COLOR="#ffffff">'+ dow[i] + '<\/FONT><\/td>';
    }

    output += '<\/tr><tr>';
    var column = 0;
    var lastMonth = whatMonth - 1;
    var lastYear = whatYear;
    if (lastMonth == -1) { lastMonth = 11; lastYear=lastYear-1;}
    for (i=0; i<startDay; i++, column++) {
        output += getDayLink((days[lastMonth]-startDay+i+1),true,lastMonth,lastYear);
    }
    for (i=1; i<=days[whatMonth]; i++, column++) {
        output += getDayLink(i,false,whatMonth,whatYear);
        if (column == 6) {
            output += '<\/tr><tr>';
            column = -1;
        }
    }

    var nextMonth = whatMonth+1;
    var nextYear = whatYear;
    if (nextMonth==12) { nextMonth=0; nextYear=nextYear+1;}

    if (column > 0) {
        for (i=1; column<7; i++, column++) {
            output +=  getDayLink(i,true,nextMonth,nextYear);
        }
        output += '<\/tr><\/table><\/td><\/tr>';
    }
    else {
        output = output.substr(0,output.length-4); // remove the <tr> from the end if there's no last row
        output += '<\/table><\/td><\/tr>';
    }

    if (ppcNN6) {
        output += '<\/table><\/form>';
    }
    else {
        output += '<\/form><\/table>';
    }
    curDate.setDate(1);
    curDate.setMonth(startMonth);
    curDate.setFullYear(startYear);
    return output;
}

//---------------------------------------------------
function getDayLink(linkDay,isGreyDate,linkMonth,linkYear) {
    var templink;
    if (!(IsUsingMinMax)) {
        if (isGreyDate) {
            templink='<td align="center" class="cal-GreyDate">' + linkDay + '<\/td>';
        }
        else {
            if (isDayToday(linkDay)) {
                templink='<td align="center" class="cal-DayCell">' + '<a class="cal-TodayLink" onmouseover="self.status=\' \';return true" href="javascript:changeDay(' + linkDay + ');">' + linkDay + '<\/a>' +'<\/td>';
            }
            else {
                templink='<td align="center" class="cal-DayCell">' + '<a class="cal-DayLink" onmouseover="self.status=\' \';return true" href="javascript:changeDay(' + linkDay + ');">' + linkDay + '<\/a>' +'<\/td>';
            }
        }
    }
    else {
        if (isDayValid(linkDay,linkMonth,linkYear)) {
            if (isGreyDate){
                templink='<td align="center" class="cal-GreyDate">' + linkDay + '<\/td>';
            }
            else {
                if (isDayToday(linkDay)) {
                    templink='<td align="center" class="cal-DayCell">' + '<a class="cal-TodayLink" onmouseover="self.status=\' \';return true" href="javascript:changeDay(' + linkDay + ');">' + linkDay + '<\/a>' +'<\/td>';
                }
                else {
                    templink='<td align="center" class="cal-DayCell">' + '<a class="cal-DayLink" onmouseover="self.status=\' \';return true" href="javascript:changeDay(' + linkDay + ');">' + linkDay + '<\/a>' +'<\/td>';
                }
            }
        }
        else {
            templink='<td align="center" class="cal-GreyInvalidDate">'+ linkDay + '<\/td>';
        }
    }
    return templink;
}

//---------------------------------------------------
function isDayToday(isDay) {
    if ((curDate.getFullYear() == todayDate.getFullYear()) && (curDate.getMonth() == todayDate.getMonth()) && (isDay == todayDate.getDate())) {
        return true;
    }
    else {
        return false;
    }
}

//---------------------------------------------------
function isDayValid(validDay, validMonth, validYear){

    curDate.setDate(validDay);
    curDate.setMonth(validMonth);
    curDate.setFullYear(validYear);

    if ((curDate>=minDate) && (curDate<=maxDate)) {
        return true;
    }
    else {
        return false;
    }
}
//---------------------------------------------------
function padout(number) {
  return (number < 10) ? '0' + number : number;
}

//---------------------------------------------------
function clearDay() {
    eval('document.' + calfrmName + '.' + curDateBox + '.value = \'\'');
    hideCalendar();
    if (FuncsToRun!=null)
        eval(FuncsToRun);
}

//---------------------------------------------------
function changeDay(whatDay) {
    curDate.setDate(whatDay);
    //eval('document.' + calfrmName + '.' + curDateBox + '.value = "'+ padout(curDate.getDate()) + '-' + names[curDate.getMonth()] + '-' + curDate.getFullYear() + '"');
    eval('document.' + calfrmName + '.' + curDateBox + '.value = "'+ curDate.getFullYear() + kstrDateSeparator + padout(curDate.getMonth()+1) + kstrDateSeparator + padout(curDate.getDate())  + '"');
    hideCalendar();
    if (FuncsToRun!=null)
        eval(FuncsToRun);
}

//---------------------------------------------------
function scrollMonth(amount) {
    var monthCheck;
    var yearCheck;

    if (ppcIE) {
        monthCheck = document.forms["Cal"].cboMonth.selectedIndex + amount;
    }
    else if (ppcNN) {
        monthCheck = document.popupcalendar.document.forms["Cal"].cboMonth.selectedIndex + amount;
    }
    if (monthCheck < 0) {
        yearCheck = curDate.getFullYear() - 1;
        if ( yearCheck < minYearList ) {
            yearCheck = minYearList;
            monthCheck = 0;
        }
        else {
            monthCheck = 11;
        }
        curDate.setFullYear(yearCheck);
    }
    else if (monthCheck >11) {
        yearCheck = curDate.getFullYear() + 1;
        if ( yearCheck > maxYearList-1 ) {
            yearCheck = maxYearList-1;
            monthCheck = 11;
        }
        else {
            monthCheck = 0;
        }
        curDate.setFullYear(yearCheck);
    }

    if (ppcIE) {
        curDate.setMonth(document.forms["Cal"].cboMonth.options[monthCheck].value);
    }
    else if (ppcNN) {
        curDate.setMonth(document.popupcalendar.document.forms["Cal"].cboMonth.options[monthCheck].value );
    }
    domlay('popupcalendar',1,ppcX,ppcY,Calendar(curDate.getMonth(),curDate.getFullYear()));
}

//---------------------------------------------------
function changeMonth() {
    if (ppcIE) {
        curDate.setMonth(document.forms["Cal"].cboMonth.options[document.forms["Cal"].cboMonth.selectedIndex].value);
        domlay('popupcalendar',1,ppcX,ppcY,Calendar(curDate.getMonth(),curDate.getFullYear()));
    }
    else if (ppcNN) {
        curDate.setMonth(document.popupcalendar.document.forms["Cal"].cboMonth.options[document.popupcalendar.document.forms["Cal"].cboMonth.selectedIndex].value);
        domlay('popupcalendar',1,ppcX,ppcY,Calendar(curDate.getMonth(),curDate.getFullYear()));
    }
}

//---------------------------------------------------
function changeYear() {
    if (ppcIE) {
        curDate.setFullYear(document.forms["Cal"].cboYear.options[document.forms["Cal"].cboYear.selectedIndex].value);
        domlay('popupcalendar',1,ppcX,ppcY,Calendar(curDate.getMonth(),curDate.getFullYear()));
    }
    else if (ppcNN) {
        curDate.setFullYear(document.popupcalendar.document.forms["Cal"].cboYear.options[document.popupcalendar.document.forms["Cal"].cboYear.selectedIndex].value);
        domlay('popupcalendar',1,ppcX,ppcY,Calendar(curDate.getMonth(),curDate.getFullYear()));
    }
}

//---------------------------------------------------
function makeArray0() {
    for (i = 0; i<makeArray0.arguments.length; i++)
        this[i] = makeArray0.arguments[i];
}