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

	var dayArrayShort = new Array('Su', 'Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa');
	var dayArrayMed = new Array('Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat');
	var dayArrayLong = new Array('Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday');
	var monthArrayShort = new Array('Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec');
	var monthArrayMed = new Array('Jan', 'Feb', 'Mar', 'Apr', 'May', 'June', 'July', 'Aug', 'Sept', 'Oct', 'Nov', 'Dec');
	var monthArrayLong = new Array('January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December');

	// these variables define the date formatting we're expecting and outputting.
	// If you want to use a different format by default, change the defaultDateSeparator
	// and defaultDateFormat variables either here or on your HTML page.
	var defaultDateSeparator = "/";        // common values would be "/" or "."
	var defaultDateFormat = "mdy"    // valid values are "mdy", "dmy", and "ymd"
	var dateSeparator = defaultDateSeparator;
	var dateFormat = defaultDateFormat;

	function displayDatePicker(dateFieldName, displayBelowThisObject, dtFormat, dtSep)
	{
	  var targetDateField = document.getElementsByName (dateFieldName).item(0);

	  // if we weren't told what node to display the datepicker beneath, just display it
	  // beneath the date field we're updating
	  if (!displayBelowThisObject)
		displayBelowThisObject = targetDateField;

	  // if a date separator character was given, update the dateSeparator variable
	  if (dtSep)
		dateSeparator = dtSep;
	  else
		dateSeparator = defaultDateSeparator;

	  // if a date format was given, update the dateFormat variable
	  if (dtFormat)
		dateFormat = dtFormat;
	  else
		dateFormat = defaultDateFormat;

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

	  // deal with elements inside tables and such
	  var parent = displayBelowThisObject;
	  while (parent.offsetParent) {
		parent = parent.offsetParent;
		x += parent.offsetLeft;
		y += parent.offsetTop ;
	  }

	  drawDatePicker(targetDateField, x, y);
	}

	function drawDatePicker(targetDateField, x, y)
	{

	  var dt = getFieldDate(targetDateField.value );


	  // the datepicker table will be drawn inside of a <div> with an ID defined by the
	  // global datePickerDivID variable. If such a div doesn't yet exist on the HTML
	  // document we're working with, add one.
	  if (!document.getElementById(datePickerDivID)) {
		// don't use innerHTML to update the body, because it can cause global variables
		// that are currently pointing to objects on the page to have bad references
		//document.body.innerHTML += "<div id='" + datePickerDivID + "' class='dpDiv'></div>";
		var newNode = document.createElement("div");
		newNode.setAttribute("id", datePickerDivID);
		newNode.setAttribute("class", "dpDiv");
		newNode.setAttribute("style", "visibility: hidden;");
		document.body.appendChild(newNode);
	  }

	  // move the datepicker div to the proper x,y coordinate and toggle the visiblity
	  var pickerDiv = document.getElementById(datePickerDivID);
	  pickerDiv.style.position = "absolute";
	  pickerDiv.style.left = x + "px";
	  pickerDiv.style.top = y + "px";
	  pickerDiv.style.visibility = (pickerDiv.style.visibility == "visible" ? "hidden" : "visible");
	  pickerDiv.style.display = (pickerDiv.style.display == "block" ? "none" : "block");
	  pickerDiv.style.zIndex = 10000;

	  // draw the datepicker table
	  refreshDatePicker(targetDateField.name, dt.getFullYear(), dt.getMonth(), dt.getDate());
	}

	function refreshDatePicker(dateFieldName, year, month, day)
	{
	  // if no arguments are passed, use today's date; otherwise, month and year
	  // are required (if a day is passed, it will be highlighted later)
	  var thisDay = new Date();

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

	  // the calendar will be drawn as a table
	  // you can customize the table elements with a global CSS style sheet,
	  // or by hardcoding style and formatting elements below
	  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>";

	  // start generating the code for the calendar table
	  var html = TABLE;

	  // this is the title bar, which displays the month and the buttons to
	  // go back to a previous month or forward to the next month
	  html += TR_title;
	  html += TD_buttons + 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;") + xTD;
	  html += xTR;

	  // this is the row that indicates which day of the week we're on
	  html += TR_days;
	  for(i = 0; i < dayArrayShort.length; i++)
		html += TD_days + dayArrayShort[i] + xTD;
	  html += xTR;

	  // now well start populating the table with days of the month
	  html += TR;

	  // first, the leading blanks
	  for (i = 0; i < thisDay.getDay(); i++)
		html += TD + "&nbsp;" + xTD;

	  // now, the days of the month
	  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 this is a Saturday, start a new row
		if (thisDay.getDay() == 6)
		  html += xTR + TR;

		// increment the day
		thisDay.setDate(thisDay.getDate() + 1);
	  } while (thisDay.getDate() > 1)

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

	  // add a button to allow the user to easily return to today, or close the calendar
	  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 + "\");'>this month</button> ";
	  html += "<button class='dpTodayButton' onClick='updateDateField(\"" + dateFieldName + "\");'>close</button>";
	  html += xTD + xTR;

	  // and finally, close the table
	  html += xTABLE;

	  document.getElementById(datePickerDivID).innerHTML = html;
	  // add an "iFrame shim" to allow the datepicker to display above selection lists
	  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 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 "dmy" :
		  return dayString + dateSeparator + monthString + dateSeparator + dateVal.getFullYear();
		case "ymd" :
		  return dateVal.getFullYear() + dateSeparator + monthString + dateSeparator + dayString;
		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 "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;

	  var pickerDiv = document.getElementById(datePickerDivID);
	  pickerDiv.style.visibility = "hidden";
	  pickerDiv.style.display = "none";

	  adjustiFrame();
	  //targetDateField.focus();
	  targetDateField.blur();

	  // after the datepicker has closed, optionally run a user-defined function called
	  // datePickerClosed, passing the field that was just updated as a parameter
	  // (note that this will only run if the user actually selected a date from the datepicker)
	  if ((dateString) && (typeof(datePickerClosed) == "function"))
		datePickerClosed(targetDateField);
	}

	function adjustiFrame(pickerDiv, iFrameDiv)
	{
	  // we know that Opera doesn't like something about this, so if we
	  // think we're using Opera, don't even try
	  var is_opera = (navigator.userAgent.toLowerCase().indexOf("opera") != -1);
	  if (is_opera)
		return;

	  // put a try/catch block around the whole thing, just in case
	  try {
		if (!document.getElementById(iFrameDivID)) {
		  // don't use innerHTML to update the body, because it can cause global variables
		  // that are currently pointing to objects on the page to have bad references
		  //document.body.innerHTML += "<iframe id='" + iFrameDivID + "' src='javascript:false;' scrolling='no' frameborder='0'>";
		  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) {
	  }

	}