function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function MM_swapImage2(imageButton, args2, args3, args4) { //v3.0
  var i,j=0,x,a=MM_swapImage2.arguments; document.MM_sr=new Array;
 
  for(i=0;i<(a.length-2);i+=3)
   if ((x=a[i])!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}


function launchCenterWindow(url, name, height, width) {
  var str = "height=" + height + ",innerHeight=" + height;
  str += ",width=" + width + ",innerWidth=" + width;
  if (window.screen) {
    var ah = screen.availHeight - 30;
    var aw = screen.availWidth - 10;

    var xc = (aw - width) / 2;
    var yc = (ah - height) / 2;

    str += ",left=" + xc + ",screenX=" + xc;
    str += ",top=" + yc + ",screenY=" + yc;
    str += ",toolbar=no,location=no,directories=no,status=yes,menubar=no,scrollbars=yes,resizable=yes";
  }
  return window.open(url, name, str);
}


function GetMonthMaxDay(monthToCalc, yearToCalc)
{
    if (monthToCalc == '2')
    {
        if (yearToCalc%4==0)
            return 29;
        else
            return 28;
    }
    var maxDays = 0;
    switch (monthToCalc)
    {
        case '1':
        case '3':
        case '5':
        case '7':
        case '8':
        case '10':
        case '12':
            maxDays = 31;
            break;
        default:
            maxDays = 30;
    }
    
    return maxDays;
}

function RepopulateDays(dayCtrl, monthCtrl, yearCtrl, errorCtrlID, hiddenDayCtrlID)
{
    var selectedDay = dayCtrl.options[dayCtrl.selectedIndex].value;
    var selectedMonth = monthCtrl.options[monthCtrl.selectedIndex].value;
    var selectedYear = yearCtrl.options[yearCtrl.selectedIndex].value;

    var errorCtrl = document.getElementById(errorCtrlID);
    if (errorCtrl && errorCtrl.innerHTML!='')
        errorCtrl.innerHTML = '';
        
    maxDays = GetMonthMaxDay(selectedMonth, selectedYear);
    var dayCtrlLength = dayCtrl.length;
    
    if (selectedDay > maxDays)
    {
        dayCtrl.selectedIndex = 0;
        var hiddenDayCtrl = document.getElementById(hiddenDayCtrlID);
        if (hiddenDayCtrl)
            hiddenDayCtrl.value = '';
            
        errorCtrl.innerHTML = 'Invalid day selected';
    }
    
    if (dayCtrlLength < maxDays)
    {
        for (var opt=dayCtrlLength; opt<maxDays; opt++)
            dayCtrl.options[opt] = new Option(opt+1, opt+1, false, false);
    }
    else if (dayCtrlLength > maxDays)
    {
        for (var opt=dayCtrlLength; opt>maxDays; opt--)
            dayCtrl.options[opt-1] = null;
    }  
    
}

function FormDateDay_onchanged(dayCtrl, monthCtrlID, yearCtrlID, errorCtrlID, hiddenDayCtrlID)
{
    var errorCtrl = document.getElementById(errorCtrlID);
    if (errorCtrl && errorCtrl.innerHTML!='')
        errorCtrl.innerHTML = '';
        
    var hiddenDayCtrl = document.getElementById(hiddenDayCtrlID);
    if (hiddenDayCtrl)
        hiddenDayCtrl.value = dayCtrl.value;
}

function FormDateMonth_onchanged(monthCtrl, dayCtrlID, yearCtrlID, errorCtrlID, hiddenDayCtrlID)
{
    var dayCtrl = document.getElementById(dayCtrlID);
    var yearCtrl = document.getElementById(yearCtrlID);
    
    RepopulateDays(dayCtrl, monthCtrl, yearCtrl, errorCtrlID, hiddenDayCtrlID);
}

function FormDateYear_onchanged(yearCtrl, monthCtrlID, dayCtrlID, errorCtrlID, hiddenDayCtrlID)
{
    var dayCtrl = document.getElementById(dayCtrlID);
    var monthCtrl = document.getElementById(monthCtrlID);
    RepopulateDays(dayCtrl, monthCtrl, yearCtrl, errorCtrlID, hiddenDayCtrlID);
}