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);
}

/**
Draw the datepicker object (which is just a table with calendar elements) at the
specified x and y coordinates, using the targetDateField object as the input tag
that will ultimately be populated with a date.

This function will normally be called by the displayDatePicker function.
*/
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()+1) ); //Added +1 to increase the date to the next day from this date Michelle Rather 05.04.07
}

/**
This is the function that actually draws the datepicker calendar.
*/
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)) {

    if (((year == thisDay.getFullYear())) && (month < thisDay.getMonth())) {
    alert("You can't choose a date that is in the past.");
    day = thisDay.getDate();
    thisDay.setDate(1);
    } else  if ((( year - thisDay.getFullYear()) == 1) && ((month - thisDay.getMonth()) > 0)) {
    // they tried to enter a month too far in advance
    alert("We're sorry. You cannot book a reservation more than 365 days in advance.");
    day = thisDay.getDate();
    thisDay.setDate(1);
    } else {
    thisDay = new Date(year, month, 1);
    }
  } else {
    // no date was passed, use the default of today
    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 we'll 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();
}

/**
Convenience function for writing the code for the buttons that bring us back or forward
a month.
*/
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>";
}

/**
Convert a JavaScript Date object to a string, based on the dateFormat and dateSeparator
variables at the beginning of this script library.
*/
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();
  }
}

/**
Convert a string to a JavaScript Date object.
*/
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;
}

/**
Try to split a date string into an array of elements, using common date separators.
If the date is split, an array is returned; otherwise, we just return false.
*/
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;
}

/**
Update the form fields with the given dateFieldName with the dateString that has been passed,
and hide the datepicker. If no dateString is passed, just close the datepicker without
changing the field value.
**/
function datePickerClosed(dateString,dateFieldName)
{
  var dateObj = getFieldDate(dateString);

  var today = new Date();
  today = new Date(today.getFullYear(), today.getMonth(), today.getDate());

  var nyr = new Date();
  nyr.setDate(nyr.getDate() + 365);
  nyr = new Date(nyr.getFullYear(), nyr.getMonth(), nyr.getDate());

  var targetDateField = document.getElementsByName(dateFieldName).item(0);
  var dateToCheck = new Date(datesArray[2], parseInt((datesArray[0] - 1),10), datesArray[1]);

  if( dateObj < today )
  {
    // the date is before today; alert the user and display the datepicker again
    alert("Please enter a date that is today or later.");

    targetDateField.value = (parseInt(today.getMonth()) + 1) + '/' + today.getDate() + '/' + today.getFullYear();

    if( targetDateField.name == 'startdate' )
    {
      document.getElementsByName('startdate').item(0).value = dateString;
      document.getElementsByName('checkInDay').item(0).selectedIndex = today.getDate() - 1;
      document.getElementsByName('checkInMonthYr').item(0).selectedIndex = 0;
    }
    else if( targetDateField.name == 'enddate' )
    {
      document.getElementsByName('enddate').item(0).value = dateString;
      document.getElementsByName('checkOutDay').item(0).selectedIndex = today.getDate() - 1;
      document.getElementsByName('checkOutMonthYr').item(0).selectedIndex = 0;
    }

    document.getElementById(datePickerDivID).style.visibility = "visible";
    document.getElementById(datePickerDivID).style.display="block";
    adjustiFrame();
  }
  else if( dateToCheck > nyr )
  {
    alert("We're sorry. You cannot book a stay more than 365 days in advance.");

    dateString = (parseInt(today.getMonth()) + 1) + '/' + today.getDate() + '/' + today.getFullYear();

    if( targetDateField.name == 'startdate' )
    {
      document.getElementsByName('startdate').item(0).value = dateString;
      document.getElementsByName('checkInDay').item(0).selectedIndex = today.getDate() - 1;
      document.getElementsByName('checkInMonthYr').item(0).selectedIndex = 0;
    }
    else if( targetDateField.name == 'enddate' )
    {
      document.getElementsByName('enddate').item(0).value = dateString;
      document.getElementsByName('checkOutDay').item(0).selectedIndex = today.getDate() - 1;
      document.getElementsByName('checkOutMonthYr').item(0).selectedIndex = 0;
    }

    document.getElementById(datePickerDivID).style.visibility = "visible";
    document.getElementById(datePickerDivID).style.display="block";
    adjustiFrame();
  }
  else
  {
    myMonth = parseInt((datesArray[0] - 1), 10);
    myMonthDay = monthArrayLong[myMonth] + "_" + datesArray[2];

    var strDay = datesArray[1];
    if(strDay.charAt(0) == "0" && strDay.length > 1 )
    {
      strDay = strDay.substring(1);
    }

    // the date is good; go ahead and update the form fields
    if( dateFieldName == 'thedate' || dateFieldName == 'startdate' )
    {
      /* Convenience alias. */
      var $options = document.forms[0].checkInMonthYr.options;

      for( var i = 0; i < $options.length; i++ )
      {
        if( myMonthDay == $options[i].value )
        {
          $options[i].selected = true;
        }
      }

      /* Convenience alias. */
      var $options = document.forms[0].checkInDay.options;
      for( var i = 0; i < $options.length; i++ )
      {
        if( strDay == $options[i].value )
        {
          $options[i].selected = true;
        }
      }
    }
    else if( dateFieldName == 'enddate' )
    {
      /* Convenience alias. */
      var $options = document.forms[0].checkOutMonthYr.options;

      for( var i = 0; i < $options.length; i++ )
      {
        if( myMonthDay == $options[i].value )
        {
          $options[i].selected = true;
        }
      }

      /* Convenience alias. */
      var $options = document.forms[0].checkOutDay.options;

      for( var i = 0; i < $options.length; i++ )
      {
        if( strDay == $options[i].value )
        {
          $options[i].selected = true;
        }
      }
    }
  }
}

function updateDateField(dateFieldName, dateString)
{
  //alert(dateFieldName);
  var targetDateField = document.getElementsByName (dateFieldName).item(0);
  if (dateString)
  {
    targetDateField.value = dateString;
    datesArray = splitDateString(dateString);
  }  
 
  var pickerDiv = document.getElementById(datePickerDivID);
  pickerDiv.style.visibility = "hidden";
  pickerDiv.style.display = "none";
  adjustiFrame();
  if ((dateString) && (typeof(datePickerClosed) == "function"))
    datePickerClosed(dateString,dateFieldName);

  /* shishir.adhikari@gmail.com */
  if(dateFieldName == "startdate") {	
		var tomorrowTemp = getFieldDate(dateString);
		var targetEndDateField = document.getElementById('enddate');		
		tomorrowTemp.setDate (tomorrowTemp.getDate() + 1);		
		//tomorrowTemp.setMonth( tomorrowTemp.getMonth() + 1 );
		var tomorrow = new Date(tomorrowTemp);		
		var dateStringEndDate = (tomorrow.getMonth()+1) + '/' + tomorrow.getDate() + '/' + tomorrow.getFullYear();	
		targetEndDateField.value = dateStringEndDate;
		document.getElementsByName('checkOutDay').item(0).selectedIndex = tomorrow.getDate()-1;
		
		objInMonthYear = document.getElementById('checkInMonthYr');
		objOutMonthYear = document.getElementById('checkOutMonthYr');
		var strCheckOutMonthYr = monthArrayLong[(tomorrow.getMonth())]+"_"+tomorrow.getFullYear();
		
		for (i=0; i<=11;i++) {
			
			if(objOutMonthYear.options[i].value==strCheckOutMonthYr) {
				document.getElementsByName('checkOutMonthYr').item(0).selectedIndex = i;
			}
		}
	
	}
   /* shishir.adhikari@gmail.com */
}

function setDropdowns(whichForm) {
    var today = new Date();
    today = new Date(today.getFullYear(), today.getMonth(), today.getDate());

    //first, set the default value of the start date dropdowns to today
    em = document.forms[whichForm];
    document.getElementsByName('checkInDay').item(0).selectedIndex = today.getMonth();
    document.getElementsByName('checkInDay').item(0).selectedIndex = today.getDate()-1;
    document.getElementsByName('arrival_year').item(0).selectedIndex = 0;
  if (document.getElementsByName('departure_month').item(0)) {
    document.getElementsByName('departure_month').item(0).selectedIndex = today.getMonth();
    document.getElementsByName('checkOutDay').item(0).selectedIndex = today.getDate();
    document.getElementsByName('departure_year').item(0).selectedIndex = 0;
  }
    //now, reset the the value of 'thedate' checkfield, in case the user has reloaded the page
    dateString = (parseInt(today.getMonth()) + 1) + '/' + today.getDate() + '/' + today.getFullYear();
    if (document.getElementsByName('thedate').item(0) ) { //single datepicker form
      document.getElementsByName('thedate').item(0).value = dateString;
    } else if (document.getElementsByName('startdate') && document.getElementsByName('enddate') ) { // double datepicker form
      document.getElementsByName('startdate').item(0).value = dateString;
      document.getElementsByName('enddate').item(0).value = dateString;
    }

}

/**
The following function performs date checking on the drop downs,
making sure the user doesn't select a date out of the proper range.
The three helper functions below update the date string ("thedate") each time a user
changes the value of a dropdown
*/

function checkDateStringFromDropdowns(dateString,dateFieldName) {
  // alert('check date string from drop downs with: ' + dateString + ' for: ' + dateFieldName);  
  var dateObj = getFieldDate(dateString);
  var today = new Date();
  today = new Date(today.getFullYear(), today.getMonth(), today.getDate());
  var targetDateField = document.getElementById(dateFieldName);

  datesArray = splitDateString(dateString);
  var nyr ; with (nyr = new Date()) setDate(getDate()+365);
    nyr = new Date(nyr.getFullYear(), nyr.getMonth(), nyr.getDate());
  var dateToCheck = new Date(datesArray[2], parseInt((datesArray[0]-1),10), datesArray[1]);

   if (dateObj < today) {
      // the date is before today, alert the user and display the datepicker again
      alert("Please enter a date that is today or later.");
      if (targetDateField.name == 'startdate') {
      document.getElementsByName('checkInDay').item(0).selectedIndex = today.getDate()-1;
      document.getElementsByName('checkInMonthYr').item(0).selectedIndex = 0; // the current month/year is always first!
      dateString = (parseInt(today.getMonth()) + 1) + '/' + today.getDate() + '/' + today.getFullYear();
      document.getElementsByName('startdate').item(0).value = dateString;
      } else if (targetDateField.name == 'enddate' ) {
      targetDateField.value = "";
      document.getElementsByName('checkOutDay').item(0).selectedIndex = today.getDate()-1;
      document.getElementsByName('checkOutMonthYr').item(0).selectedIndex = 0; // the current month/year is always first!
      dateString = (parseInt(today.getMonth()) + 1) + '/' + today.getDate() + '/' + today.getFullYear();
      document.getElementsByName('enddate').item(0).value = dateString;
      }
   } else if ( dateToCheck > nyr  ) {
     alert( "You can only check availability up to 365 days in advance." ) ;
     if (targetDateField.name == 'startdate') {
      document.getElementsByName('checkInDay').item(0).selectedIndex = today.getDate()-1;
      document.getElementsByName('checkInMonthYr').item(0).selectedIndex = 0; // the current month/year is always first!
      dateString = (parseInt(today.getMonth()) + 1) + '/' + today.getDate() + '/' + today.getFullYear();
      document.getElementsByName('startdate').item(0).value = dateString;
      } else if (targetDateField.name == 'enddate' ) {
      targetDateField.value = "";
      document.getElementsByName('checkOutDay').item(0).selectedIndex = today.getDate()-1;
      document.getElementsByName('checkOutMonthYr').item(0).selectedIndex = 0; // the current month/year is always first!
      dateString = (parseInt(today.getMonth()) + 1) + '/' + today.getDate() + '/' + today.getFullYear();
      document.getElementsByName('enddate').item(0).value = dateString;
      }

    } else  {
    return;
     //the date is good, go ahead and update the form fields
     }

}

function doSplit( dateFieldName, selectedItem, whichDropdown )
{
  if( typeof(monthObjLong) == 'undefined' )
  {
    /* Javascript dates are zero-indexed. */
    monthObjLong = {
      'January'   : 0,
      'February'  : 1,
      'March'     : 2,
      'April'     : 3,
      'May'       : 4,
      'June'      : 5,
      'July'      : 6,
      'August'    : 7,
      'September' : 8,
      'October'   : 9,
      'November'  : 10,
      'December'  : 11
    };
  }
  var selectedMonth;
  var selectedYear;
  var sArray;
  var itemText = document.getElementsByName(whichDropdown).item(0).value;
  sArray = itemText.split("_");

  selectedMonth = monthObjLong[sArray[0]];
  selectedYear = sArray[1];

  updateMonthValue(dateFieldName, selectedMonth, whichDropdown);
  updateYearValue(dateFieldName, selectedYear, whichDropdown);  
  /* shishir.adhikari@gmail.com */
  /*if(dateFieldName=="startdate") {
	  updateMonthValue("enddate", selectedMonth, whichDropdown);
  	  updateYearValue("enddate", selectedYear, whichDropdown);	  
  }*/
  /* shishir.adhikari@gmail.com */
}

function updateMonthValue(dateFieldName, selectedMonth, whichDropdown) {
  if (whichDropdown == 'checkInMonthYr') { var myDayField = 'checkInDay'; }
    else { var myDayField = 'checkOutDay';}
    var today = new Date();
    today = new Date(today.getFullYear(), today.getMonth(), today.getDate());
    var targetDateField = document.getElementById(dateFieldName);
    var myDate = selectedMonth + 1;
      var dateString = targetDateField.value;

    if(dateString == '') {
    dateString = (today.getMonth() + 1) + '/' + today.getDate() + '/' + today.getFullYear(); }

    if ((dateString) && (myDate > 0)) {
        var dArray = splitDateString(dateString);
        if (selectedMonth < today.getMonth() ) {
        //to allow the user to choose a month before the current in the calendar prior to
        // updating the year drowndown, we have to push the year up now.
        theYear = today.getFullYear() + 1;
        } else { theYear = dArray[2];}

        dArray[0] = myDate;
        dateString = dArray[0]+ '/' + dArray[1] + '/' + theYear;
        targetDateField.value = dateString;

        checkDateStringFromDropdowns(dateString,dateFieldName);
      }

}

function updateDayValue(dateFieldName, selectedDay, checkDay) {
    var today = new Date();
    today = new Date(today.getFullYear(), today.getMonth(), today.getDate());
    var targetDateField = document.getElementById(dateFieldName);
    var myDate = selectedDay + 1;
    var dateString = targetDateField.value;

    if(dateString == '') {
    dateString = (today.getMonth() + 1) + '/' + today.getDate() + '/' + today.getFullYear(); }

    if ((dateString) && (myDate > 0)) {
        var dArray = splitDateString(dateString);
        dArray[1] = myDate;
        dateString = dArray[0]+ '/' + dArray[1] + '/' + dArray[2];
        targetDateField.value = dateString;
        
		if(checkDateStringFromDropdowns(dateString,dateFieldName)=="" || !checkDateStringFromDropdowns(dateString,dateFieldName)) {		
		/* shishir.adhikari@gmail.com */
		  if(dateFieldName == "startdate") {	
				var tomorrowTemp = getFieldDate(dateString);
				var targetEndDateField = document.getElementById('enddate');		
				tomorrowTemp.setDate (tomorrowTemp.getDate() + 1);		
				//tomorrowTemp.setMonth( tomorrowTemp.getMonth() + 1 );
				var tomorrow = new Date(tomorrowTemp);		
				var dateStringEndDate = (tomorrow.getMonth()+1) + '/' + tomorrow.getDate() + '/' + tomorrow.getFullYear();	
				targetEndDateField.value = dateStringEndDate;
				document.getElementsByName('checkOutDay').item(0).selectedIndex = tomorrow.getDate()-1;
				
				objInMonthYear = document.getElementById('checkInMonthYr');
				objOutMonthYear = document.getElementById('checkOutMonthYr');
				var strCheckOutMonthYr = monthArrayLong[(tomorrow.getMonth())]+"_"+tomorrow.getFullYear();
				
				for (i=0; i<=11;i++) {
					
					if(objOutMonthYear.options[i].value==strCheckOutMonthYr) {
						document.getElementsByName('checkOutMonthYr').item(0).selectedIndex = i;
					}
				}
			
			}
		   /* shishir.adhikari@gmail.com */
			
		}
    }
	
  
	
/*
   if (checkDay = 'checkInDay'){
     var tomorrow = today+1;
     var targetEndDateField = document.getElementById('enddate');
     dateString = tomorrow;
     if(dateString == '') {
       dateString = (tomorrow.getMonth() + 1) + '/' + tomorrow.getDate() + '/' + tomorrow.getFullYear(); }

    targetEndDateField.value = dateString;
    checkDateStringFromDropdowns(dateString,targetEndDateField);
    var endMonth = tomorrow.getMonth + 1;
    var endYear = tomorrow.getFullYear();
    document.getElementById('checkOutMonthYr').item(0).selectedIndex.value = endMonth + ' ' + endYear;
     }

*/
}

function updateYearValue(dateFieldName, selectedYear) {
    var today = new Date();
    today = new Date(today.getFullYear(), today.getMonth(), today.getDate());
    var targetDateField = document.getElementById(dateFieldName);
    var myDate = selectedYear;

    var dateString = targetDateField.value;

    if(dateString == '') {
    dateString = (today.getMonth() + 1) + '/' + today.getDate() + '/' + today.getFullYear(); }

    if ((dateString) && (myDate > 0)) {
        var dArray = splitDateString(dateString);
        dArray[2] = myDate;
        dateString = dArray[0]+ '/' + dArray[1] + '/' + dArray[2];
        targetDateField.value = dateString;
        checkDateStringFromDropdowns(dateString,dateFieldName);
      }
	 //alert(dateString);
	 /* shishir.adhikari@gmail.com */	  
	  if(dateFieldName == "startdate") {	
			var tomorrowTemp = getFieldDate(dateString);
			var targetEndDateField = document.getElementById('enddate');		
			tomorrowTemp.setDate (tomorrowTemp.getDate() + 1);		
			//tomorrowTemp.setMonth( tomorrowTemp.getMonth() + 1 );
			var tomorrow = new Date(tomorrowTemp);				
			var dateStringEndDate = (tomorrow.getMonth()+1) + '/' + tomorrow.getDate() + '/' + tomorrow.getFullYear();			
			targetEndDateField.value = dateStringEndDate;
			document.getElementsByName('checkOutDay').item(0).selectedIndex = tomorrow.getDate()-1;
						
			objInMonthYear = document.getElementById('checkInMonthYr');
			objOutMonthYear = document.getElementById('checkOutMonthYr');
			var strCheckOutMonthYr = monthArrayLong[(tomorrow.getMonth())]+"_"+tomorrow.getFullYear();
			
			for (i=0; i<=11;i++) {
				
				if(objOutMonthYear.options[i].value==strCheckOutMonthYr) {
					document.getElementsByName('checkOutMonthYr').item(0).selectedIndex = i;					
				}
			}
			
		}
	   /* shishir.adhikari@gmail.com */	 
}

//////////////////////////////////////
// these helper functions check the date to make sure it is a date that actually
// occurs in the month (ie, is not Feb 30th)
// Declaring valid date character, minimum year and maximum year
var dtCh= "/";
var minYear=2000;
var maxYear=2100;

function isInteger(s){
  var i;
    for (i = 0; i < s.length; i++){
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function stripCharsInBag(s, bag){
  var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++){
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function daysInFebruary (year){
  // February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
function DaysArray(n) {
  for (var i = 1; i <= n; i++) {
    this[i] = 31
    if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
    if (i==2) {this[i] = 29}
   }
   return this
}

function isDate(dtStr){
  var daysInMonth = DaysArray(12)
  var pos1=dtStr.indexOf(dtCh)
  var pos2=dtStr.indexOf(dtCh,pos1+1)
  var strMonth=dtStr.substring(0,pos1)
  var strDay=dtStr.substring(pos1+1,pos2)
  var strYear=dtStr.substring(pos2+1)
  strYr=strYear
  if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
  if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
  for (var i = 1; i <= 3; i++) {
    if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
  }
  month=parseInt(strMonth)
  day=parseInt(strDay)
  year=parseInt(strYr)
  if (pos1==-1 || pos2==-1){
    alert("The date format should be : mm/dd/yyyy")
    return false
  }
  if (strMonth.length<1 || month<1 || month>12){
    alert("Please enter a valid month")
    return false
  }
  if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
    alert("Please enter a valid day")
    return false
  }
  if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
    alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear)
    return false
  }
  if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
    alert("Please enter a valid date")
    return false
  }
return true
}

//end date valid helper functions
///////////////////

/**
Use an "iFrame shim" to deal with problems where the datepicker shows up behind
selection list elements, if they're below the datepicker.
*/
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) {
    alert("We're sorry, an unanticipated error has occured, and we cannot process your request at this time.");
  }
}