var datePickerDivID = "datepicker";
var iFrameDivID = "datepickeriframe";

var dayArrayShort = new Array('Di', 'Lu', 'Ma', 'Me', 'Je', 'Ve', 'Sa');
var dayArrayMed = new Array('Dim', 'Lun', 'Mar', 'Mer', 'Jeu', 'Ven', 'Sam');
var dayArrayLong = new Array('Dimanche', 'Lundi', 'Mardi', 'Mercredi', 'Jeudi', 'Vendredi', 'Samedi');
var monthArrayShort = new Array('J', 'F', 'M', 'A', 'M', 'J', 'J', 'A', 'S', 'O', 'N', 'D');
var monthArrayMed = new Array('Jan', 'Fev', 'Mar', 'Avr', 'Mai', 'Juin', 'Juil', 'Aout', 'Sept', 'Oct', 'Nov', 'Dec');
var monthArrayLong = new Array('Janvier', 'Février', 'Mars', 'Avril', 'Mai', 'Juin', 'Juillet', 'Août', 'Septembre', 'Octobre', 'Novembre', 'Décembre');

var defaultDateSeparator = "/";        // common values would be "/" or "."
var defaultDateFormat = "mdy";    // valid values are "mdy", "dmy", and "ymd"
var defaultYearsDelay = 0;    // valid values are "mdy", "dmy", and "ymd"

var dateSeparator = defaultDateSeparator;
var dateFormat = defaultDateFormat;
var yDelay = defaultYearsDelay;

var targetDateField = "";
var targetDateFieldY = "";
var targetDateFieldM = "";
var targetDateFieldD = "";

function displayDatePicker_single(dateFieldName)
{
   targetDateField = document.getElementsByName(dateFieldName).item(1); 
   if(targetDateField == undefined || (typeof targetDateField != 'object') || (targetDateField.length == 0)) targetDateField = document.getElementsByName(dateFieldName).item(0);
  
  displayBelowThisObject = targetDateField;


    dateSeparator = defaultDateSeparator;


    yDelay = defaultYearsDelay;
    

    dateFormat = defaultDateFormat;

  var x = displayBelowThisObject.offsetLeft;
  var y = displayBelowThisObject.offsetTop + displayBelowThisObject.offsetHeight ;

  var parent = displayBelowThisObject;
  while (parent.offsetParent) {
    parent = parent.offsetParent;
    x += parent.offsetLeft;
    y += parent.offsetTop ;
  }

  drawDatePicker_single(targetDateField, x, y, yDelay);
}






function displayDatePicker(dateFieldNameY,dateFieldNameM,dateFieldNameD)
{
  targetDateField = document.getElementsByName(dateFieldNameY).item(0);
  targetDateFieldY = document.getElementsByName(dateFieldNameY).item(0);
  targetDateFieldM = document.getElementsByName(dateFieldNameM).item(0);
  targetDateFieldD = document.getElementsByName(dateFieldNameD).item(0);

  displayBelowThisObject = targetDateField;


    dateSeparator = defaultDateSeparator;


    yDelay = defaultYearsDelay;
    

    dateFormat = defaultDateFormat;

  var x = displayBelowThisObject.offsetLeft;
  var y = displayBelowThisObject.offsetTop + displayBelowThisObject.offsetHeight ;

  var parent = displayBelowThisObject;
  while (parent.offsetParent) {
    parent = parent.offsetParent;
    x += parent.offsetLeft;
    y += parent.offsetTop ;
  }

  drawDatePicker(targetDateField, x, y, yDelay);
}



function displayDatePicker_single(dateFieldName)
{
  targetDateField = document.getElementsByName(dateFieldName).item(0);
//  targetDateFieldY = document.getElementsByName(dateFieldNameY).item(0);
//  targetDateFieldM = document.getElementsByName(dateFieldNameM).item(0);
//  targetDateFieldD = document.getElementsByName(dateFieldNameD).item(0);

  displayBelowThisObject = targetDateField;


    dateSeparator = defaultDateSeparator;


    yDelay = defaultYearsDelay;
    

    dateFormat = defaultDateFormat;

  var x = displayBelowThisObject.offsetLeft;
  var y = displayBelowThisObject.offsetTop + displayBelowThisObject.offsetHeight ;

  var parent = displayBelowThisObject;
  while (parent.offsetParent) {
    parent = parent.offsetParent;
    x += parent.offsetLeft;
    y += parent.offsetTop ;
  }

  drawDatePicker_single(targetDateField, x, y, yDelay);
}


function drawDatePicker(targetDateField, x, y, yDelay)
{
//  var dt = getFieldDate(targetDateField.value );
  var dt = getFieldDate();
  if (!document.getElementById(datePickerDivID)) {
    var newNode = document.createElement("div");
    newNode.setAttribute("id", datePickerDivID);
    newNode.setAttribute("class", "dpDiv");
    newNode.setAttribute("style", "visibility: hidden;");
    document.body.appendChild(newNode);
  }

  var pickerDiv = document.getElementById(datePickerDivID);
  pickerDiv.style.position = "absolute";
  pickerDiv.style.left = x + "px";
  pickerDiv.style.top = y + "px";
//  pickerDiv.style.left = (screen.width / 2) - 100  + "px";
//  pickerDiv.style.top = (screen.height / 2) + 60 + "px";
    pickerDiv.style.visibility = (pickerDiv.style.visibility == "visible" ? "hidden" : "visible");
  pickerDiv.style.display = (pickerDiv.style.display == "block" ? "none" : "block");
  pickerDiv.style.zIndex = 10000;
  
  var dtYear = dt.getFullYear() - yDelay;

  refreshDatePicker(targetDateField.name, dtYear, dt.getMonth(), dt.getDate());
}


function drawDatePicker_single(targetDateField, x, y, yDelay)
{
//  var dt = getFieldDate(targetDateField.value );
  var dt = getFieldDate();
  if (!document.getElementById(datePickerDivID)) {
    var newNode = document.createElement("div");
    newNode.setAttribute("id", datePickerDivID);
    newNode.setAttribute("class", "dpDiv");
    newNode.setAttribute("style", "visibility: hidden;");
    document.body.appendChild(newNode);
  }

  var pickerDiv = document.getElementById(datePickerDivID);
  pickerDiv.style.position = "absolute";
  pickerDiv.style.left = x + "px";
  pickerDiv.style.top = y + "px";
//  pickerDiv.style.left = (screen.width / 2) - 100  + "px";
//  pickerDiv.style.top = (screen.height / 2) + 60 + "px";
    pickerDiv.style.visibility = (pickerDiv.style.visibility == "visible" ? "hidden" : "visible");
  pickerDiv.style.display = (pickerDiv.style.display == "block" ? "none" : "block");
  pickerDiv.style.zIndex = 10000;
  
  var dtYear = dt.getFullYear() - yDelay;

  refreshDatePicker_single(targetDateField.name, dtYear, dt.getMonth(), dt.getDate());
}


function refreshDatePicker(dateFieldName, year, month, day)
{
  var thisDay = new Date();

  if ((month >= 0) && (year > 0)) {
    thisDay = new Date(year, month, 1);
  } else {
    day = thisDay.getDate();
    thisDay.setDate(1);
  }

  var crlf = "\r\n";
  var TABLE = "<table cols=7 class='dpTable'>" + crlf;
  var xTABLE = "</table>" + crlf;
  var TR = "<tr class='dpTR'>";
  var TR_title = "<tr class='dpTitleTR'>";
  var TR_days = "<tr class='dpDayTR'>";
  var TR_todaybutton = "<tr class='dpTodayButtonTR'>";
  var xTR = "</tr>" + crlf;
  var TD = "<td class='dpTD' onMouseOut='this.className=\"dpTD\";' onMouseOver=' this.className=\"dpTDHover\";' ";    // leave this tag open, because we'll be adding an onClick event
  var TD_title = "<td colspan=5 class='dpTitleTD'>";
  var TD_buttons = "<td class='dpButtonTD'>";
  var TD_todaybutton = "<td colspan=7 class='dpTodayButtonTD'>";
  var TD_days = "<td class='dpDayTD'>";
  var TD_selected = "<td class='dpDayHighlightTD' onMouseOut='this.className=\"dpDayHighlightTD\";' onMouseOver='this.className=\"dpTDHover\";' ";    // leave this tag open, because we'll be adding an onClick event
  var xTD = "</td>" + crlf;
  var DIV_title = "<div class='dpTitleText'>";
  var DIV_selected = "<div class='dpDayHighlight'>";
  var xDIV = "</div>";

  var html = TABLE;

  html += TR_title;
  html += TD_buttons + getButtonCode(dateFieldName, thisDay, -12, "&laquo;") + getButtonCode(dateFieldName, thisDay, -1, "&lt;") + xTD;
  html += TD_title + DIV_title + monthArrayLong[ thisDay.getMonth()] + " " + thisDay.getFullYear() + xDIV + xTD;
  html += TD_buttons + getButtonCode(dateFieldName, thisDay, 1, "&gt;") + getButtonCode(dateFieldName, thisDay, 12, "&raquo;") + xTD;
  html += xTR;

  html += TR_days;
  for(i = 0; i < dayArrayShort.length; i++)
    html += TD_days + dayArrayShort[i] + xTD;
  html += xTR;

  html += TR;

  for (i = 0; i < thisDay.getDay(); i++)
    html += TD + "&nbsp;" + xTD;

  do {
    dayNum = thisDay.getDate();
    TD_onclick = " onclick=\"updateDateField('" + dateFieldName + "', '" + getDateString(thisDay) + "');\">";

    if (dayNum == day)
      html += TD_selected + TD_onclick + DIV_selected + dayNum + xDIV + xTD;
    else
      html += TD + TD_onclick + dayNum + xTD;

    if (thisDay.getDay() == 6)
      html += xTR + TR;

    thisDay.setDate(thisDay.getDate() + 1);
  } while (thisDay.getDate() > 1)

  if (thisDay.getDay() > 0) {
    for (i = 6; i > thisDay.getDay(); i--)
      html += TD + "&nbsp;" + xTD;
  }
  html += xTR;

  var today = new Date();
  var todayString = "Today is " + dayArrayMed[today.getDay()] + ", " + monthArrayMed[ today.getMonth()] + " " + today.getDate();
  html += TR_todaybutton + TD_todaybutton;
  html += "<button class='dpTodayButton' onClick='refreshDatePicker(\"" + dateFieldName + "\");'>Ce mois-ci</button> ";
  html += "<button class='dpTodayButton' onClick='updateDateField(\"" + dateFieldName + "\");'>Fermer</button>";
  html += xTD + xTR;

  html += xTABLE;

  document.getElementById(datePickerDivID).innerHTML = html;
  adjustiFrame();
}


function refreshDatePicker_single(dateFieldName, year, month, day)
{
  var thisDay = new Date();

  if ((month >= 0) && (year > 0)) {
    thisDay = new Date(year, month, 1);
  } else {
    day = thisDay.getDate();
    thisDay.setDate(1);
  }

  var crlf = "\r\n";
  var TABLE = "<table cols=7 class='dpTable'>" + crlf;
  var xTABLE = "</table>" + crlf;
  var TR = "<tr class='dpTR'>";
  var TR_title = "<tr class='dpTitleTR'>";
  var TR_days = "<tr class='dpDayTR'>";
  var TR_todaybutton = "<tr class='dpTodayButtonTR'>";
  var xTR = "</tr>" + crlf;
  var TD = "<td class='dpTD' onMouseOut='this.className=\"dpTD\";' onMouseOver=' this.className=\"dpTDHover\";' ";    // leave this tag open, because we'll be adding an onClick event
  var TD_title = "<td colspan=5 class='dpTitleTD'>";
  var TD_buttons = "<td class='dpButtonTD'>";
  var TD_todaybutton = "<td colspan=7 class='dpTodayButtonTD'>";
  var TD_days = "<td class='dpDayTD'>";
  var TD_selected = "<td class='dpDayHighlightTD' onMouseOut='this.className=\"dpDayHighlightTD\";' onMouseOver='this.className=\"dpTDHover\";' ";    // leave this tag open, because we'll be adding an onClick event
  var xTD = "</td>" + crlf;
  var DIV_title = "<div class='dpTitleText'>";
  var DIV_selected = "<div class='dpDayHighlight'>";
  var xDIV = "</div>";

  var html = TABLE;

  html += TR_title;
  html += TD_buttons + getButtonCode_single(dateFieldName, thisDay, -12, "&laquo;") + getButtonCode_single(dateFieldName, thisDay, -1, "&lt;") + xTD;
  html += TD_title + DIV_title + monthArrayLong[ thisDay.getMonth()] + " " + thisDay.getFullYear() + xDIV + xTD;
  html += TD_buttons + getButtonCode_single(dateFieldName, thisDay, 1, "&gt;") + getButtonCode_single(dateFieldName, thisDay, 12, "&raquo;") + xTD;
  html += xTR;

  html += TR_days;
  for(i = 0; i < dayArrayShort.length; i++)
    html += TD_days + dayArrayShort[i] + xTD;
  html += xTR;

  html += TR;

  for (i = 0; i < thisDay.getDay(); i++)
    html += TD + "&nbsp;" + xTD;

  do {
    dayNum = thisDay.getDate();
    TD_onclick = " onclick=\"updateDateField_single('" + dateFieldName + "', '" + getDateString(thisDay) + "');\">";

    if (dayNum == day)
      html += TD_selected + TD_onclick + DIV_selected + dayNum + xDIV + xTD;
    else
      html += TD + TD_onclick + dayNum + xTD;

    if (thisDay.getDay() == 6)
      html += xTR + TR;

    thisDay.setDate(thisDay.getDate() + 1);
  } while (thisDay.getDate() > 1)

  if (thisDay.getDay() > 0) {
    for (i = 6; i > thisDay.getDay(); i--)
      html += TD + "&nbsp;" + xTD;
  }
  html += xTR;

  var today = new Date();
  var todayString = "Today is " + dayArrayMed[today.getDay()] + ", " + monthArrayMed[ today.getMonth()] + " " + today.getDate();
  html += TR_todaybutton + TD_todaybutton;
  html += "<button class='dpTodayButton' onClick='refreshDatePicker_single(\"" + dateFieldName + "\");'>Ce mois-ci</button> ";
  html += "<button class='dpTodayButton' onClick='updateDateField_single(\"" + dateFieldName + "\");'>Fermer</button>";
  html += xTD + xTR;

  html += xTABLE;

  document.getElementById(datePickerDivID).innerHTML = html;
  adjustiFrame();
}


function getButtonCode(dateFieldName, dateVal, adjust, label)
{
  var newMonth = (dateVal.getMonth () + adjust) % 12;
  var newYear = dateVal.getFullYear() + parseInt((dateVal.getMonth() + adjust) / 12);
  if (newMonth < 0) {
    newMonth += 12;
    newYear += -1;
  }

  return "<button class='dpButton' onClick='refreshDatePicker(\"" + dateFieldName + "\", " + newYear + ", " + newMonth + ");'>" + label + "</button>";
}

function getButtonCode_single(dateFieldName, dateVal, adjust, label)
{
  var newMonth = (dateVal.getMonth () + adjust) % 12;
  var newYear = dateVal.getFullYear() + parseInt((dateVal.getMonth() + adjust) / 12);
  if (newMonth < 0) {
    newMonth += 12;
    newYear += -1;
  }

  return "<button class='dpButton' onClick='refreshDatePicker_single(\"" + dateFieldName + "\", " + newYear + ", " + newMonth + ");'>" + label + "</button>";
}


function getDateString(dateVal)
{
  var dayString = "00" + dateVal.getDate();
  var monthString = "00" + (dateVal.getMonth()+1);
  dayString = dayString.substring(dayString.length - 2);
  monthString = monthString.substring(monthString.length - 2);

  switch (dateFormat) {
    case "my" :
      return monthString + dateSeparator + dateVal.getFullYear();
    case "dmy" :
      return dayString + dateSeparator + monthString + dateSeparator + dateVal.getFullYear();
    case "ymd" :
      return dateVal.getFullYear() + dateSeparator + monthString + dateSeparator + dayString;
    case "my" :
      return monthString + dateSeparator + dateVal.getFullYear();
    case "mdy" :
    default :
      return monthString + dateSeparator + dayString + dateSeparator + dateVal.getFullYear();
  }
}


function getFieldDate(dateString)
{
  var dateVal;
  var dArray;
  var d, m, y;

  try {
    dArray = splitDateString(dateString);
    if (dArray) {
      switch (dateFormat) {
        case "my" :
          m = parseInt(dArray[1], 10) - 1;
          y = parseInt(dArray[2], 10);
          break;
        case "dmy" :
          d = parseInt(dArray[0], 10);
          m = parseInt(dArray[1], 10) - 1;
          y = parseInt(dArray[2], 10);
          break;
        case "ymd" :
          d = parseInt(dArray[2], 10);
          m = parseInt(dArray[1], 10) - 1;
          y = parseInt(dArray[0], 10);
          break;
        case "mdy" :
        default :
          d = parseInt(dArray[1], 10);
          m = parseInt(dArray[0], 10) - 1;
          y = parseInt(dArray[2], 10);
          break;
      }
      dateVal = new Date(y, m, d);
    } else if (dateString) {
      dateVal = new Date(dateString);
    } else {
      dateVal = new Date();
    }
  } catch(e) {
    dateVal = new Date();
  }

  return dateVal;
}


function splitDateString(dateString)
{
  var dArray;
  if (dateString.indexOf("/") >= 0)
    dArray = dateString.split("/");
  else if (dateString.indexOf(".") >= 0)
    dArray = dateString.split(".");
  else if (dateString.indexOf("-") >= 0)
    dArray = dateString.split("-");
  else if (dateString.indexOf("\\") >= 0) //"
    dArray = dateString.split("\\"); //"
  else
    dArray = false;

  return dArray;
}


function updateDateField(dateFieldName, dateString)
{
  var targetDateField = document.getElementsByName (dateFieldName).item(0);
  
  if (dateString)
      {
    //targetDateField.value = dateString;
        targetDateFieldY.value = dateString.substr(6,4);
        targetDateFieldM.value = dateString.substr(0,2);
        targetDateFieldD.value = dateString.substr(3,2);
    }
  var pickerDiv = document.getElementById(datePickerDivID);
  pickerDiv.style.visibility = "hidden";
  pickerDiv.style.display = "none";

  adjustiFrame();
  targetDateField.focus();

  if ((dateString) && (typeof(datePickerClosed) == "function"))
    datePickerClosed(targetDateField);
}

function updateDateField_single(dateFieldName, dateString)
{
   targetDateField = document.getElementsByName(dateFieldName).item(1); 
   if(targetDateField == undefined || (typeof targetDateField != 'object') || (targetDateField.length == 0)) targetDateField = document.getElementsByName(dateFieldName).item(0);
  
  if (dateString)
      {
        targetDateField.value = dateString;        
    }
  var pickerDiv = document.getElementById(datePickerDivID);
  pickerDiv.style.visibility = "hidden";
  pickerDiv.style.display = "none";

  adjustiFrame();
  targetDateField.focus();

  if ((dateString) && (typeof(datePickerClosed) == "function"))
    datePickerClosed(targetDateField);
}


function adjustiFrame(pickerDiv, iFrameDiv)
{
  var is_opera = (navigator.userAgent.toLowerCase().indexOf("opera") != -1);
  if (is_opera)
    return;

  try {
    if (!document.getElementById(iFrameDivID)) {
      var newNode = document.createElement("iFrame");
      newNode.setAttribute("id", iFrameDivID);
      newNode.setAttribute("src", "javascript:false;");
      newNode.setAttribute("scrolling", "no");
      newNode.setAttribute ("frameborder", "0");
      document.body.appendChild(newNode);
    }

    if (!pickerDiv)
      pickerDiv = document.getElementById(datePickerDivID);
    if (!iFrameDiv)
      iFrameDiv = document.getElementById(iFrameDivID);

    try {
      iFrameDiv.style.position = "absolute";
      iFrameDiv.style.width = pickerDiv.offsetWidth;
      iFrameDiv.style.height = pickerDiv.offsetHeight ;
      iFrameDiv.style.top = pickerDiv.style.top;
      iFrameDiv.style.left = pickerDiv.style.left;
      iFrameDiv.style.zIndex = pickerDiv.style.zIndex - 1;
      iFrameDiv.style.visibility = pickerDiv.style.visibility ;
      iFrameDiv.style.display = pickerDiv.style.display;
    } catch(e) {
    }

  } catch (ee) {
  }

}