

<!--

/* jQuery UI Date Picker v3.4 - previously jQuery Calendar
   Written by Marc Grabanski (m@marcgrabanski.com) and Keith Wood (kbwood@virginbroadband.com.au).
   Copyright (c) 2007 Marc Grabanski (http://marcgrabanski.com/code/ui-datepicker)
   Dual licensed under the MIT (MIT-LICENSE.txt)
   and GPL (GPL-LICENSE.txt) licenses.
   Date: 09-03-2007  */
/* Date picker manager.
   Use the singleton instance of this class, $.datepicker, to interact with the date picker.
   Settings for (groups of) date pickers are maintained in an instance object
   (DatepickerInstance), allowing multiple different settings on the same page. */
   
(function($) { // hide the namespace
function Datepicker() {
 this.debug = false; // Change this to true to start debugging
 this._nextId = 0; // Next ID for a date picker instance
 this._inst = []; // List of instances indexed by ID
 this._curInst = null; // The current instance in use
 this._disabledInputs = []; // List of date picker inputs that have been disabled
 this._datepickerShowing = false; // True if the popup picker is showing , false if not
 this._inDialog = false; // True if showing within a "dialog", false if not
 this.regional = []; // Available regional settings, indexed by language code
 this.regional[''] = { // Default regional settings
  clearText: 'Clear', // Display text for clear link
  clearStatus: 'Erase the current date', // Status text for clear link
  closeText: 'Close', // Display text for close link
  closeStatus: 'Close without change', // Status text for close link
  prevText: '&#x3c;Prev', // Display text for previous month link
  prevStatus: 'Show the previous month', // Status text for previous month link
  nextText: 'Next&#x3e;', // Display text for next month link
  nextStatus: 'Show the next month', // Status text for next month link
  currentText: 'Today', // Display text for current month link
  currentStatus: 'Show the current month', // Status text for current month link
  monthNames: ['January','February','March','April','May','June',
   'July','August','September','October','November','December'], // Names of months for drop-down and formatting
  monthNamesShort: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'], // For formatting
  monthStatus: 'Show a different month', // Status text for selecting a month
  yearStatus: 'Show a different year', // Status text for selecting a year
  weekHeader: 'Wk', // Header for the week of the year column
  weekStatus: 'Week of the year', // Status text for the week of the year column
  dayNames: ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'], // For formatting
  dayNamesShort: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'], // For formatting
  dayNamesMin: ['Su','Mo','Tu','We','Th','Fr','Sa'], // Column headings for days starting at Sunday
  dayStatus: 'Set DD as first week day', // Status text for the day of the week selection
  dateStatus: 'Select DD, M d', // Status text for the date selection
  dateFormat: 'mm/dd/yy', // See format options on parseDate
  firstDay: 0, // The first day of the week, Sun = 0, Mon = 1, ...
  initStatus: 'Select a date', // Initial Status text on opening
  isRTL: false // True if right-to-left language, false if left-to-right
 };
 this._defaults = { // Global defaults for all the date picker instances
  showOn: 'focus', // 'focus' for popup on focus,
   // 'button' for trigger button, or 'both' for either
  showAnim: 'show', // Name of jQuery animation for popup
  defaultDate: null, // Used when field is blank: actual date,
   // +/-number for offset from today, null for today
  appendText: '', // Display text following the input box, e.g. showing the format
  buttonText: '...', // Text for trigger button
  buttonImage: '', // URL for trigger button image
  buttonImageOnly: false, // True if the image appears alone, false if it appears on a button
  closeAtTop: true, // True to have the clear/close at the top,
   // false to have them at the bottom
  mandatory: false, // True to hide the Clear link, false to include it
  hideIfNoPrevNext: false, // True to hide next/previous month links
   // if not applicable, false to just disable them
  changeMonth: true, // True if month can be selected directly, false if only prev/next
  changeYear: true, // True if year can be selected directly, false if only prev/next
  yearRange: '-10:+10', // Range of years to display in drop-down,
   // either relative to current year (-nn:+nn) or absolute (nnnn:nnnn)
  changeFirstDay: true, // True to click on day name to change, false to remain as set
  showOtherMonths: false, // True to show dates in other months, false to leave blank
  showWeeks: false, // True to show week of the year, false to omit
  calculateWeek: this.iso8601Week, // How to calculate the week of the year,
   // takes a Date and returns the number of the week for it
  shortYearCutoff: '+10', // Short year values < this are in the current century,
   // > this are in the previous century, 
   // string value starting with '+' for current year + value
  showStatus: false, // True to show status bar at bottom, false to not show it
  statusForDate: this.dateStatus, // Function to provide status text for a date -
   // takes date and instance as parameters, returns display text
  minDate: null, // The earliest selectable date, or null for no limit
  maxDate: null, // The latest selectable date, or null for no limit
  speed: 'normal', // Speed of display/closure
  beforeShowDay: null, // Function that takes a date and returns an array with
   // [0] = true if selectable, false if not,
   // [1] = custom CSS class name(s) or '', e.g. $.datepicker.noWeekends
  beforeShow: null, // Function that takes an input field and
   // returns a set of custom settings for the date picker
  onSelect: null, // Define a callback function when a date is selected
  onClose: null, // Define a callback function when the datepicker is closed
  numberOfMonths: 1, // Number of months to show at a time
  stepMonths: 1, // Number of months to step back/forward
  rangeSelect: false, // Allows for selecting a date range on one date picker
  rangeSeparator: ' - ' // Text between two dates in a range
 };
 $.extend(this._defaults, this.regional['']);
 this._datepickerDiv = $('<div id="datepicker_div"></div>');
}
$.extend(Datepicker.prototype, {
 /* Class name added to elements to indicate already configured with a date picker. */
 markerClassName: 'hasDatepicker',
 /* Debug logging (if enabled). */
 log: function () {
  if (this.debug) {
   console.log.apply('', arguments);
  }
 },
 
 /* Register a new date picker instance - with custom settings. */
 _register: function(inst) {
  var id = this._nextId++;
  this._inst[id] = inst;
  return id;
 },
 /* Retrieve a particular date picker instance based on its ID. */
 _getInst: function(id) {
  return this._inst[id] || id;
 },
 /* Override the default settings for all instances of the date picker. 
    @param  settings  object - the new settings to use as defaults (anonymous object)
    @return the manager object */
 setDefaults: function(settings) {
  extendRemove(this._defaults, settings || {});
  return this;
 },
 /* Attach the date picker to a jQuery selection.
    @param  target    element - the target input field or division or span
    @param  settings  object - the new settings to use for this date picker instance (anonymous) */
 _attachDatepicker: function(target, settings) {
  // check for settings on the control itself - in namespace 'date:'
  var inlineSettings = null;
  for (attrName in this._defaults) {
   var attrValue = target.getAttribute('date:' + attrName);
   if (attrValue) {
    inlineSettings = inlineSettings || {};
    try {
     inlineSettings[attrName] = eval(attrValue);
    }
    catch (err) {
     inlineSettings[attrName] = attrValue;
    }
   }
  }
  var nodeName = target.nodeName.toLowerCase();
  if (nodeName == 'input') {
   var instSettings = (inlineSettings ? $.extend($.extend({}, settings || {}),
    inlineSettings || {}) : settings); // clone and customise
   var inst = (inst && !inlineSettings ? inst :
    new DatepickerInstance(instSettings, false));
   this._connectDatepicker(target, inst);
  } 
  else if (nodeName == 'div' || nodeName == 'span') {
   var instSettings = $.extend($.extend({}, settings || {}),
    inlineSettings || {}); // clone and customise
   var inst = new DatepickerInstance(instSettings, true);
   this._inlineDatepicker(target, inst);
  }
 },
 /* Detach a datepicker from its control.
    @param  target    element - the target input field or division or span */
 _destroyDatepicker: function(target) {
  var $target = $(target);
  var nodeName = target.nodeName.toLowerCase();
  var calId = target._calId;
  target._calId = null;
  if (nodeName == 'input') {
   $target.siblings('.datepicker_append').replaceWith('');
   $target.siblings('.datepicker_trigger').replaceWith('');
   $target.removeClass(this.markerClassName).
    unbind('focus', this._showDatepicker).
    unbind('keydown', this._doKeyDown).
    unbind('keypress', this._doKeyPress);
   var wrapper = $target.parents('.datepicker_wrap');
   if (wrapper) {
    wrapper.replaceWith(wrapper.html());
   }
  } 
  else if (nodeName == 'div' || nodeName == 'span') {
   $target.removeClass(this.markerClassName).empty();
  }
  if ($('input[_calId=' + calId + ']').length == 0) {
   // clean up if last for this ID
   this._inst[calId] = null;
  }
 },
 /* Enable the date picker to a jQuery selection.
    @param  target    element - the target input field or division or span */
 _enableDatepicker: function(target) {
  target.disabled = false;
  $(target).siblings('button.datepicker_trigger').each(function() { this.disabled = false; });
  $(target).siblings('img.datepicker_trigger').css({opacity: '1.0', cursor: ''});
  var $target = target;
  this._disabledInputs = $.map(this._disabledInputs,
   function(value) { return (value == $target ? null : value); }); // delete entry
 },
 /* Disable the date picker to a jQuery selection.
    @param  target    element - the target input field or division or span */
 _disableDatepicker: function(target) {
  target.disabled = true;
  $(target).siblings('button.datepicker_trigger').each(function() { this.disabled = true; });
  $(target).siblings('img.datepicker_trigger').css({opacity: '0.5', cursor: 'default'});
  var $target = target;
  this._disabledInputs = $.map($.datepicker._disabledInputs,
   function(value) { return (value == $target ? null : value); }); // delete entry
  this._disabledInputs[$.datepicker._disabledInputs.length] = target;
 },
 /* Is the first field in a jQuery collection disabled as a datepicker?
    @param  target    element - the target input field or division or span
    @return boolean - true if disabled, false if enabled */
 _isDisabledDatepicker: function(target) {
  if (!target) {
   return false;
  }
  for (var i = 0; i < this._disabledInputs.length; i++) {
   if (this._disabledInputs[i] == target) {
    return true;
   }
  }
  return false;
 },
 /* Update the settings for a date picker attached to an input field or division.
    @param  target  element - the target input field or division or span
    @param  name    string - the name of the setting to change or
                    object - the new settings to update
    @param  value   any - the new value for the setting (omit if above is an object) */
 _changeDatepicker: function(target, name, value) {
  var settings = name || {};
  if (typeof name == 'string') {
   settings = {};
   settings[name] = value;
  }
  var inst = this._getInst(target._calId);
  if (inst) {
   extendRemove(inst._settings, settings);
   this._updateDatepicker(inst);
  }
 },
 /* Set the dates for a jQuery selection.
    @param  target   element - the target input field or division or span
    @param  date     Date - the new date
    @param  endDate  Date - the new end date for a range (optional) */
 _setDateDatepicker: function(target, date, endDate) {
  var inst = this._getInst(target._calId);
  if (inst) {
   inst._setDate(date, endDate);
   this._updateDatepicker(inst);
  }
 },
 /* Get the date(s) for the first entry in a jQuery selection.
    @param  target  element - the target input field or division or span
    @return Date - the current date or
            Date[2] - the current dates for a range */
 _getDateDatepicker: function(target) {
  var inst = this._getInst(target._calId);
  return (inst ? inst._getDate() : null);
 },
 /* Handle keystrokes. */
 _doKeyDown: function(e) {
  var inst = $.datepicker._getInst(this._calId);
  if ($.datepicker._datepickerShowing) {
   switch (e.keyCode) {
    case 9:  $.datepicker.hideDatepicker('');
      break; // hide on tab out
    case 13: $.datepicker._selectDay(inst, inst._selectedMonth, inst._selectedYear,
       $('td.datepicker_daysCellOver', inst._datepickerDiv)[0]);
      return false; // don't submit the form
      break; // select the value on enter
    case 27: $.datepicker.hideDatepicker(inst._get('speed'));
      break; // hide on escape
    case 33: $.datepicker._adjustDate(inst,
       (e.ctrlKey ? -1 : -inst._get('stepMonths')), (e.ctrlKey ? 'Y' : 'M'));
      break; // previous month/year on page up/+ ctrl
    case 34: $.datepicker._adjustDate(inst,
       (e.ctrlKey ? +1 : +inst._get('stepMonths')), (e.ctrlKey ? 'Y' : 'M'));
      break; // next month/year on page down/+ ctrl
    case 35: if (e.ctrlKey) $.datepicker._clearDate(inst);
      break; // clear on ctrl+end
    case 36: if (e.ctrlKey) $.datepicker._gotoToday(inst);
      break; // current on ctrl+home
    case 37: if (e.ctrlKey) $.datepicker._adjustDate(inst, -1, 'D');
      break; // -1 day on ctrl+left
    case 38: if (e.ctrlKey) $.datepicker._adjustDate(inst, -7, 'D');
      break; // -1 week on ctrl+up
    case 39: if (e.ctrlKey) $.datepicker._adjustDate(inst, +1, 'D');
      break; // +1 day on ctrl+right
    case 40: if (e.ctrlKey) $.datepicker._adjustDate(inst, +7, 'D');
      break; // +1 week on ctrl+down
   }
  }
  else if (e.keyCode == 36 && e.ctrlKey) { // display the date picker on ctrl+home
   $.datepicker._showDatepicker(this);
  }
 },
 /* Filter entered characters - based on date format. */
 _doKeyPress: function(e) {
  var inst = $.datepicker._getInst(this._calId);
  var chars = $.datepicker._possibleChars(inst._get('dateFormat'));
  var chr = String.fromCharCode(e.charCode == undefined ? e.keyCode : e.charCode);
  return e.ctrlKey || (chr < ' ' || !chars || chars.indexOf(chr) > -1);
 },
 /* Attach the date picker to an input field. */
 _connectDatepicker: function(target, inst) {
  var input = $(target);
  if (input.is('.' + this.markerClassName)) {
   return;
  }
  var appendText = inst._get('appendText');
  var isRTL = inst._get('isRTL');
  if (appendText) {
   if (isRTL) {
    input.before('<span class="datepicker_append">' + appendText + '</span>');
   }
   else {
    input.after('<span class="datepicker_append">' + appendText + '</span>');
   }
  }
  var showOn = inst._get('showOn');
  if (showOn == 'focus' || showOn == 'both') { // pop-up date picker when in the marked field
   input.focus(this._showDatepicker);
  }
  if (showOn == 'button' || showOn == 'both') { // pop-up date picker when button clicked
   var buttonText = inst._get('buttonText');
   var buttonImage = inst._get('buttonImage');
   var trigger = $(inst._get('buttonImageOnly') ? '<img class="datepicker_trigger" src="' +
    buttonImage + '" alt="' + buttonText + '" title="' + buttonText + '"/>' :
    '<button type="button" class="datepicker_trigger">' + (buttonImage != '' ?
    '<img src="' + buttonImage + '" alt="' + buttonText + '" title="' + buttonText + '"/>' :
    buttonText) + '</button>');
   input.wrap('<span class="datepicker_wrap"></span>');
   if (isRTL) {
    input.before(trigger);
   }
   else {
    input.after(trigger);
   }
   trigger.click(function() {
    if ($.datepicker._datepickerShowing && $.datepicker._lastInput == target) {
     $.datepicker.hideDatepicker();
    } else {
     $.datepicker._showDatepicker(target);
    }
   });
        }
  input.addClass(this.markerClassName).keydown(this._doKeyDown).keypress(this._doKeyPress);
  input.bind("setData.datepicker", function(event, key, value) {
   inst._settings[key] = value;
  }).bind("getData.datepicker", function(event, key) {
   return inst._get(key);
  });
  input[0]._calId = inst._id;
 },
 /* Attach an inline date picker to a div. */
 _inlineDatepicker: function(target, inst) {
  var input = $(target);
  if (input.is('.' + this.markerClassName)) {
   return;
  }
  input.addClass(this.markerClassName).append(inst._datepickerDiv);
  input.bind("setData.datepicker", function(event, key, value){
   inst._settings[key] = value;
  }).bind("getData.datepicker", function(event, key){
   return inst._get(key);
  });
  input[0]._calId = inst._id;
  this._updateDatepicker(inst);
  /* @todo: fix _inlineShow automatic resizing
   - Endless loop bug in IE6.  
   - inst._datepickerDiv.resize doesn't ever fire in firefox.  */
  // inst._datepickerDiv.resize(function() { $.datepicker._inlineShow(inst); });
 },
 /* Tidy up after displaying the date picker. */
 _inlineShow: function(inst) {
  var numMonths = inst._getNumberOfMonths(); // fix width for dynamic number of date pickers
  inst._datepickerDiv.width(numMonths[1] * $('.datepicker', inst._datepickerDiv[0]).width());
 }, 
 /* Pop-up the date picker in a "dialog" box.
    @param  dateText  string - the initial date to display (in the current format)
    @param  onSelect  function - the function(dateText) to call when a date is selected
    @param  settings  object - update the dialog date picker instance's settings (anonymous object)
    @param  pos       int[2] - coordinates for the dialog's position within the screen or
                      event - with x/y coordinates or
                      leave empty for default (screen centre)
    @return the manager object */
 dialogDatepicker: function(dateText, onSelect, settings, pos) {
  var inst = this._dialogInst; // internal instance
  if (!inst) {
   inst = this._dialogInst = new DatepickerInstance({}, false);
   this._dialogInput = $('<input type="text" size="1" style="position: absolute; top: -100px;"/>');
   this._dialogInput.keydown(this._doKeyDown);
   $('body').append(this._dialogInput);
   this._dialogInput[0]._calId = inst._id;
  }
  extendRemove(inst._settings, settings || {});
  this._dialogInput.val(dateText);
  this._pos = (pos ? (pos.length ? pos : [pos.pageX, pos.pageY]) : null);
  if (!this._pos) {
   var browserWidth = window.innerWidth || document.documentElement.clientWidth ||
    document.body.clientWidth;
   var browserHeight = window.innerHeight || document.documentElement.clientHeight ||
    document.body.clientHeight;
   var scrollX = document.documentElement.scrollLeft || document.body.scrollLeft;
   var scrollY = document.documentElement.scrollTop || document.body.scrollTop;
   this._pos = // should use actual width/height below
    [(browserWidth / 2) - 100 + scrollX, (browserHeight / 2) - 150 + scrollY];
  }
  // move input on screen for focus, but hidden behind dialog
  this._dialogInput.css('left', this._pos[0] + 'px').css('top', this._pos[1] + 'px');
  inst._settings.onSelect = onSelect;
  this._inDialog = true;
  this._datepickerDiv.addClass('datepicker_dialog');
  this._showDatepicker(this._dialogInput[0]);
  if ($.blockUI) {
   $.blockUI(this._datepickerDiv);
  }
  return this;
 },
 /* Pop-up the date picker for a given input field.
    @param  input  element - the input field attached to the date picker or
                   event - if triggered by focus */
 _showDatepicker: function(input) {
  input = input.target || input;
  if (input.nodeName.toLowerCase() != 'input') { // find from button/image trigger
   input = $('input', input.parentNode)[0];
  }
  if ($.datepicker._lastInput == input) { // already here
   return;
  }
  if ($.datepicker._isDisabledDatepicker(input)) {
   return;
  }
  var inst = $.datepicker._getInst(input._calId);
  var beforeShow = inst._get('beforeShow');
  extendRemove(inst._settings, (beforeShow ? beforeShow.apply(input, [input, inst]) : {}));
  $.datepicker.hideDatepicker('');
  $.datepicker._lastInput = input;
  inst._setDateFromField(input);
  if ($.datepicker._inDialog) { // hide cursor
   input.value = '';
  }
  if (!$.datepicker._pos) { // position below input
   $.datepicker._pos = $.datepicker._findPos(input);
   $.datepicker._pos[1] += input.offsetHeight; // add the height
  }
  var isFixed = false;
  $(input).parents().each(function() {
   isFixed |= $(this).css('position') == 'fixed';
  });
  if (isFixed && $.browser.opera) { // correction for Opera when fixed and scrolled
   $.datepicker._pos[0] -= document.documentElement.scrollLeft;
   $.datepicker._pos[1] -= document.documentElement.scrollTop;
  }
  inst._datepickerDiv.css('position', ($.datepicker._inDialog && $.blockUI ?
   'static' : (isFixed ? 'fixed' : 'absolute'))).
   css('left', $.datepicker._pos[0] + 'px').css('top', $.datepicker._pos[1] + 'px');
  $.datepicker._pos = null;
  inst._rangeStart = null;
  $.datepicker._updateDatepicker(inst);
  if (!inst._inline) {
   var speed = inst._get('speed');
   var postProcess = function() {
    $.datepicker._datepickerShowing = true;
    $.datepicker._afterShow(inst);
   };
   var showAnim = inst._get('showAnim') || 'show';
   inst._datepickerDiv[showAnim](speed, postProcess);
   if (speed == '') {
    postProcess();
   }
   if (inst._input[0].type != 'hidden') {
    inst._input[0].focus();
   }
   $.datepicker._curInst = inst;
  }
 },
 /* Generate the date picker content. */
 _updateDatepicker: function(inst) {
  inst._datepickerDiv.empty().append(inst._generateDatepicker());
  var numMonths = inst._getNumberOfMonths();
  if (numMonths[0] != 1 || numMonths[1] != 1) {
   inst._datepickerDiv.addClass('datepicker_multi');
  } 
  else {
   inst._datepickerDiv.removeClass('datepicker_multi');
  }
  if (inst._get('isRTL')) {
   inst._datepickerDiv.addClass('datepicker_rtl');
  }
  else {
   inst._datepickerDiv.removeClass('datepicker_rtl');
  }
  if (inst._input && inst._input[0].type != 'hidden') {
   inst._input[0].focus();
  }
 },
 /* Tidy up after displaying the date picker. */
 _afterShow: function(inst) {
  var numMonths = inst._getNumberOfMonths(); // fix width for dynamic number of date pickers
  //inst._datepickerDiv.width(numMonths[1] * $('.datepicker', inst._datepickerDiv[0])[0].offsetWidth);
  if ($.browser.msie && parseInt($.browser.version) < 7) { // fix IE < 7 select problems
   $('#datepicker_cover').css({width: inst._datepickerDiv.width() + 4,
    height: inst._datepickerDiv.height() + 4});
  }
  // re-position on screen if necessary
  var isFixed = inst._datepickerDiv.css('position') == 'fixed';
  var pos = inst._input ? $.datepicker._findPos(inst._input[0]) : null;
  var browserWidth = window.innerWidth || document.documentElement.clientWidth ||
   document.body.clientWidth;
  var browserHeight = window.innerHeight || document.documentElement.clientHeight ||
   document.body.clientHeight;
  var scrollX = (isFixed ? 0 : document.documentElement.scrollLeft || document.body.scrollLeft);
  var scrollY = (isFixed ? 0 : document.documentElement.scrollTop || document.body.scrollTop);
  // reposition date picker horizontally if outside the browser window
  if ((inst._datepickerDiv.offset().left + inst._datepickerDiv.width() -
    (isFixed && $.browser.msie ? document.documentElement.scrollLeft : 0)) >
    (browserWidth + scrollX)) {
   inst._datepickerDiv.css('left', Math.max(scrollX,
    pos[0] + (inst._input ? $(inst._input[0]).width() : null) - inst._datepickerDiv.width() -
    (isFixed && $.browser.opera ? document.documentElement.scrollLeft : 0)) + 'px');
  }
  // reposition date picker vertically if outside the browser window
  if ((inst._datepickerDiv.offset().top + inst._datepickerDiv.height() -
    (isFixed && $.browser.msie ? document.documentElement.scrollTop : 0)) >
    (browserHeight + scrollY) ) {
   inst._datepickerDiv.css('top', Math.max(scrollY,
    pos[1] - (this._inDialog ? 0 : inst._datepickerDiv.height()) -
    (isFixed && $.browser.opera ? document.documentElement.scrollTop : 0)) + 'px');
  }
 },
 
 /* Find an object's position on the screen. */
 _findPos: function(obj) {
  while (obj && (obj.type == 'hidden' || obj.nodeType != 1)) {
   obj = obj.nextSibling;
  }
  var curleft = curtop = 0;
  if (obj.offsetParent) {
   do {
    curleft += obj.offsetLeft;
    curtop += obj.offsetTop;
   } while (obj = obj.offsetParent);
  }
  return [curleft,curtop];
 },
 /* Hide the date picker from view.
    @param  speed  string - the speed at which to close the date picker
    @return void */
 hideDatepicker: function(speed) {
  var inst = this._curInst;
  if (!inst) {
   return;
  }
  var rangeSelect = inst._get('rangeSelect');
  if (rangeSelect && this._stayOpen) {
   this._selectDate(inst, inst._formatDate(
    inst._currentDay, inst._currentMonth, inst._currentYear));
  }
  this._stayOpen = false;
  if (this._datepickerShowing) {
   speed = (speed != null ? speed : inst._get('speed'));
   var showAnim = inst._get('showAnim');
   inst._datepickerDiv[(showAnim == 'slideDown' ? 'slideUp' :
    (showAnim == 'fadeIn' ? 'fadeOut' : 'hide'))](speed, function() {
    $.datepicker._tidyDialog(inst);
   });
   if (speed == '') {
    this._tidyDialog(inst);
   }
   var onClose = inst._get('onClose');
   if (onClose) {
    onClose.apply((inst._input ? inst._input[0] : null),
     [inst._getDate(), inst]);  // trigger custom callback
   }
   this._datepickerShowing = false;
   this._lastInput = null;
   inst._settings.prompt = null;
   if (this._inDialog) {
    this._dialogInput.css('position', 'absolute').
     css('left', '0px').css('top', '-100px');
    if ($.blockUI) {
     $.unblockUI();
     $('body').append(this._datepickerDiv);
    }
   }
   this._inDialog = false;
  }
  this._curInst = null;
 },
 /* Tidy up after a dialog display. */
 _tidyDialog: function(inst) {
  inst._datepickerDiv.removeClass('datepicker_dialog').
   unbind('.datepicker');
  $('.datepicker_prompt', inst._datepickerDiv).remove();
 },
 /* Close date picker if clicked elsewhere. */
 _checkExternalClick: function(event) {
  if (!$.datepicker._curInst) {
   return;
  }
  var target = $(event.target);
  if ((target.parents("#datepicker_div").length == 0) &&
    (target.attr('class') != 'datepicker_trigger') &&
    $.datepicker._datepickerShowing && !($.datepicker._inDialog && $.blockUI)) {
   $.datepicker.hideDatepicker('');
  }
 },
 /* Adjust one of the date sub-fields. */
 _adjustDate: function(id, offset, period) {
  var inst = this._getInst(id);
  inst._adjustDate(offset, period);
  this._updateDatepicker(inst);
 },
 /* Action for current link. */
 _gotoToday: function(id) {
  var date = new Date();
  var inst = this._getInst(id);
  inst._selectedDay = date.getDate();
  inst._drawMonth = inst._selectedMonth = date.getMonth();
  inst._drawYear = inst._selectedYear = date.getFullYear();
  this._adjustDate(inst);
 },
 /* Action for selecting a new month/year. */
 _selectMonthYear: function(id, select, period) {
  var inst = this._getInst(id);
  inst._selectingMonthYear = false;
  inst[period == 'M' ? '_drawMonth' : '_drawYear'] =
   select.options[select.selectedIndex].value - 0;
  this._adjustDate(inst);
 },
 /* Restore input focus after not changing month/year. */
 _clickMonthYear: function(id) {
  var inst = this._getInst(id);
  if (inst._input && inst._selectingMonthYear && !$.browser.msie) {
   inst._input[0].focus();
  }
  inst._selectingMonthYear = !inst._selectingMonthYear;
 },
 /* Action for changing the first week day. */
 _changeFirstDay: function(id, day) {
  var inst = this._getInst(id);
  inst._settings.firstDay = day;
  this._updateDatepicker(inst);
 },
 /* Action for selecting a day. */
 _selectDay: function(id, month, year, td) {
  if ($(td).is('.datepicker_unselectable')) {
   return;
  }
  var inst = this._getInst(id);
  var rangeSelect = inst._get('rangeSelect');
  if (rangeSelect) {
   if (!this._stayOpen) {
    $('.datepicker td').removeClass('datepicker_currentDay');
    $(td).addClass('datepicker_currentDay');
   } 
   this._stayOpen = !this._stayOpen;
  }
  inst._selectedDay = inst._currentDay = $('a', td).html();
  inst._selectedMonth = inst._currentMonth = month;
  inst._selectedYear = inst._currentYear = year;
  this._selectDate(id, inst._formatDate(
   inst._currentDay, inst._currentMonth, inst._currentYear));
  if (this._stayOpen) {
   inst._endDay = inst._endMonth = inst._endYear = null;
   inst._rangeStart = new Date(inst._currentYear, inst._currentMonth, inst._currentDay);
   this._updateDatepicker(inst);
  }
  else if (rangeSelect) {
   inst._endDay = inst._currentDay;
   inst._endMonth = inst._currentMonth;
   inst._endYear = inst._currentYear;
   inst._selectedDay = inst._currentDay = inst._rangeStart.getDate();
   inst._selectedMonth = inst._currentMonth = inst._rangeStart.getMonth();
   inst._selectedYear = inst._currentYear = inst._rangeStart.getFullYear();
   inst._rangeStart = null;
   if (inst._inline) {
    this._updateDatepicker(inst);
   }
  }
 },
 /* Erase the input field and hide the date picker. */
 _clearDate: function(id) {
  var inst = this._getInst(id);
  this._stayOpen = false;
  inst._endDay = inst._endMonth = inst._endYear = inst._rangeStart = null;
  this._selectDate(inst, '');
 },
 /* Update the input field with the selected date. */
 _selectDate: function(id, dateStr) {
  var inst = this._getInst(id);
  dateStr = (dateStr != null ? dateStr : inst._formatDate());
  if (inst._rangeStart) {
   dateStr = inst._formatDate(inst._rangeStart) + inst._get('rangeSeparator') + dateStr;
  }
  if (inst._input) {
   inst._input.val(dateStr);
  }
  var onSelect = inst._get('onSelect');
  if (onSelect) {
   onSelect.apply((inst._input ? inst._input[0] : null), [dateStr, inst]);  // trigger custom callback
  }
  else {
   if (inst._input) {
    inst._input.trigger('change'); // fire the change event
   }
  }
  if (inst._inline) {
   this._updateDatepicker(inst);
  }
  else {
   if (!this._stayOpen) {
    this.hideDatepicker(inst._get('speed'));
    this._lastInput = inst._input[0];
    if (typeof(inst._input[0]) != 'object') {
     inst._input[0].focus(); // restore focus
    }
    this._lastInput = null;
   }
  }
 },
 /* Set as beforeShowDay function to prevent selection of weekends.
    @param  date  Date - the date to customise
    @return [boolean, string] - is this date selectable?, what is its CSS class? */
 noWeekends: function(date) {
  var day = date.getDay();
  return [(day > 0 && day < 6), ''];
 },
 
 /* Set as calculateWeek to determine the week of the year based on the ISO 8601 definition.
    @param  date  Date - the date to get the week for
    @return  number - the number of the week within the year that contains this date */
 iso8601Week: function(date) {
  var checkDate = new Date(date.getFullYear(), date.getMonth(), date.getDate());
  var firstMon = new Date(checkDate.getFullYear(), 1 - 1, 4); // First week always contains 4 Jan
  var firstDay = firstMon.getDay() || 7; // Day of week: Mon = 1, ..., Sun = 7
  firstMon.setDate(firstMon.getDate() + 1 - firstDay); // Preceding Monday
  if (firstDay < 4 && checkDate < firstMon) { // Adjust first three days in year if necessary
   checkDate.setDate(checkDate.getDate() - 3); // Generate for previous year
   return $.datepicker.iso8601Week(checkDate);
  }
  else if (checkDate > new Date(checkDate.getFullYear(), 12 - 1, 28)) { // Check last three days in year
   firstDay = new Date(checkDate.getFullYear() + 1, 1 - 1, 4).getDay() || 7;
   if (firstDay > 4 && (checkDate.getDay() || 7) < firstDay - 3) { // Adjust if necessary
    checkDate.setDate(checkDate.getDate() + 3); // Generate for next year
    return $.datepicker.iso8601Week(checkDate);
   }
  }
  return Math.floor(((checkDate - firstMon) / 86400000) / 7) + 1; // Weeks to given date
 },
 
 /* Provide status text for a particular date.
    @param  date  the date to get the status for
    @param  inst  the current datepicker instance
    @return  the status display text for this date */
 dateStatus: function(date, inst) {
  return $.datepicker.formatDate(inst._get('dateStatus'), date, inst._getFormatConfig());
 },
 /* Parse a string value into a date object.
    The format can be combinations of the following:
    d  - day of month (no leading zero)
    dd - day of month (two digit)
    D  - day name short
    DD - day name long
    m  - month of year (no leading zero)
    mm - month of year (two digit)
    M  - month name short
    MM - month name long
    y  - year (two digit)
    yy - year (four digit)
    '...' - literal text
    '' - single quote
    @param  format           String - the expected format of the date
    @param  value            String - the date in the above format
    @param  settings  Object - attributes include:
                      shortYearCutoff  Number - the cutoff year for determining the century (optional)
                      dayNamesShort    String[7] - abbreviated names of the days from Sunday (optional)
                      dayNames         String[7] - names of the days from Sunday (optional)
                      monthNamesShort  String[12] - abbreviated names of the months (optional)
                      monthNames       String[12] - names of the months (optional)
    @return  Date - the extracted date value or null if value is blank */
 parseDate: function (format, value, settings) {
  if (format == null || value == null) {
   throw 'Invalid arguments';
  }
//  format = dateFormats[format] || format;
  value = (typeof value == 'object' ? value.toString() : value + '');
  if (value == '') {
   return null;
  }
  var shortYearCutoff = (settings ? settings.shortYearCutoff : null) || this._defaults.shortYearCutoff;
  var dayNamesShort = (settings ? settings.dayNamesShort : null) || this._defaults.dayNamesShort;
  var dayNames = (settings ? settings.dayNames : null) || this._defaults.dayNames;
  var monthNamesShort = (settings ? settings.monthNamesShort : null) || this._defaults.monthNamesShort;
  var monthNames = (settings ? settings.monthNames : null) || this._defaults.monthNames;
  var year = -1;
  var month = -1;
  var day = -1;
  var literal = false;
  // Check whether a format character is doubled
  var lookAhead = function(match) {
   var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) == match);
   if (matches) {
    iFormat++;
   }
   return matches; 
  };
  // Extract a number from the string value
  var getNumber = function(match) {
   lookAhead(match);
   var size = (match == 'y' ? 4 : 2);
   var num = 0;
   while (size > 0 && iValue < value.length &&
     value.charAt(iValue) >= '0' && value.charAt(iValue) <= '9') {
    num = num * 10 + (value.charAt(iValue++) - 0);
    size--;
   }
   if (size == (match == 'y' ? 4 : 2)) {
    throw 'Missing number at position ' + iValue;
   }
   return num;
  };
  // Extract a name from the string value and convert to an index
  var getName = function(match, shortNames, longNames) {
   var names = (lookAhead(match) ? longNames : shortNames);
   var size = 0;
   for (var j = 0; j < names.length; j++) {
    size = Math.max(size, names[j].length);
   }
   var name = '';
   var iInit = iValue;
   while (size > 0 && iValue < value.length) {
    name += value.charAt(iValue++);
    for (var i = 0; i < names.length; i++) {
     if (name == names[i]) {
      return i + 1;
     }
    }
    size--;
   }
   throw 'Unknown name at position ' + iInit;
  };
  // Confirm that a literal character matches the string value
  var checkLiteral = function() {
   if (value.charAt(iValue) != format.charAt(iFormat)) {
    throw 'Unexpected literal at position ' + iValue;
   }
   iValue++;
  };
  var iValue = 0;
  for (var iFormat = 0; iFormat < format.length; iFormat++) {
   if (literal) {
    if (format.charAt(iFormat) == '\'' && !lookAhead('\'')) {
     literal = false;
    }
    else {
     checkLiteral();
    }
   }
   else {
    switch (format.charAt(iFormat)) {
     case 'd':
      day = getNumber('d');
      break;
     case 'D': 
      getName('D', dayNamesShort, dayNames);
      break;
     case 'm': 
      month = getNumber('m');
      break;
     case 'M':
      month = getName('M', monthNamesShort, monthNames); 
      break;
     case 'y':
      year = getNumber('y');
      break;
     case '\'':
      if (lookAhead('\'')) {
       checkLiteral();
      }
      else {
       literal = true;
      }
      break;
     default:
      checkLiteral();
    }
   }
  }
  if (year < 100) {
   year += new Date().getFullYear() - new Date().getFullYear() % 100 +
    (year <= shortYearCutoff ? 0 : -100);
  }
  var date = new Date(year, month - 1, day);
  if (date.getFullYear() != year || date.getMonth() + 1 != month || date.getDate() != day) {
   throw 'Invalid date'; // E.g. 31/02/*
  }
  return date;
 },
 /* Format a date object into a string value.
    The format can be combinations of the following:
    d  - day of month (no leading zero)
    dd - day of month (two digit)
    D  - day name short
    DD - day name long
    m  - month of year (no leading zero)
    mm - month of year (two digit)
    M  - month name short
    MM - month name long
    y  - year (two digit)
    yy - year (four digit)
    '...' - literal text
    '' - single quote
    @param  format    String - the desired format of the date
    @param  date      Date - the date value to format
    @param  settings  Object - attributes include:
                      dayNamesShort    String[7] - abbreviated names of the days from Sunday (optional)
                      dayNames         String[7] - names of the days from Sunday (optional)
                      monthNamesShort  String[12] - abbreviated names of the months (optional)
                      monthNames       String[12] - names of the months (optional)
    @return  String - the date in the above format */
 formatDate: function (format, date, settings) {
  if (!date) {
   return '';
  }
//  format = dateFormats[format] || format;
  var dayNamesShort = (settings ? settings.dayNamesShort : null) || this._defaults.dayNamesShort;
  var dayNames = (settings ? settings.dayNames : null) || this._defaults.dayNames;
  var monthNamesShort = (settings ? settings.monthNamesShort : null) || this._defaults.monthNamesShort;
  var monthNames = (settings ? settings.monthNames : null) || this._defaults.monthNames;
  // Check whether a format character is doubled
  var lookAhead = function(match) {
   var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) == match);
   if (matches) {
    iFormat++;
   }
   return matches; 
  };
  // Format a number, with leading zero if necessary
  var formatNumber = function(match, value) {
   return (lookAhead(match) && value < 10 ? '0' : '') + value;
  };
  // Format a name, short or long as requested
  var formatName = function(match, value, shortNames, longNames) {
   return (lookAhead(match) ? longNames[value] : shortNames[value]);
  };
  var output = '';
  var literal = false;
  if (date) {
   for (var iFormat = 0; iFormat < format.length; iFormat++) {
    if (literal) {
     if (format.charAt(iFormat) == '\'' && !lookAhead('\'')) {
      literal = false;
     }
     else {
      output += format.charAt(iFormat);
     }
    }
    else {
     switch (format.charAt(iFormat)) {
      case 'd':
       output += formatNumber('d', date.getDate()); 
       break;
      case 'D': 
       output += formatName('D', date.getDay(), dayNamesShort, dayNames);
       break;
      case 'm': 
       output += formatNumber('m', date.getMonth() + 1); 
       break;
      case 'M':
       output += formatName('M', date.getMonth(), monthNamesShort, monthNames); 
       break;
      case 'y':
       output += (lookAhead('y') ? date.getFullYear() : 
        (date.getYear() % 100 < 10 ? '0' : '') + date.getYear() % 100);
       break;
      case '\'':
       if (lookAhead('\'')) {
        output += '\'';
       }
       else {
        literal = true;
       }
       break;
      default:
       output += format.charAt(iFormat);
     }
    }
   }
  }
  return output;
 },
 /* Extract all possible characters from the date format. */
 _possibleChars: function (format) {
//  format = dateFormats[format] || format;
  var chars = '';
  var literal = false;
  for (var iFormat = 0; iFormat < format.length; iFormat++) {
   if (literal) {
    if (format.charAt(iFormat) == '\'' && !lookAhead('\'')) {
     literal = false;
    }
    else {
     chars += format.charAt(iFormat);
    }
   }
   else {
    switch (format.charAt(iFormat)) {
     case 'd':
     case 'm': 
     case 'y':
      chars += '0123456789'; 
      break;
     case 'D': 
     case 'M':
      return null; // Accept anything
     case '\'':
      if (lookAhead('\'')) {
       chars += '\'';
      }
      else {
       literal = true;
      }
      break;
     default:
      chars += format.charAt(iFormat);
    }
   }
  }
  return chars;
 }
});
/* Individualised settings for date picker functionality applied to one or more related inputs.
   Instances are managed and manipulated through the Datepicker manager. */
function DatepickerInstance(settings, inline) {
 this._id = $.datepicker._register(this);
 this._selectedDay = 0; // Current date for selection
 this._selectedMonth = 0; // 0-11
 this._selectedYear = 0; // 4-digit year
 this._drawMonth = 0; // Current month at start of datepicker
 this._drawYear = 0;
 this._input = null; // The attached input field
 this._inline = inline; // True if showing inline, false if used in a popup
 this._datepickerDiv = (!inline ? $.datepicker._datepickerDiv :
  $('<div id="datepicker_div_' + this._id + '" class="datepicker_inline"></div>'));
 // customise the date picker object - uses manager defaults if not overridden
 this._settings = extendRemove({}, settings || {}); // clone
 if (inline) {
  this._setDate(this._getDefaultDate());
 }
}
$.extend(DatepickerInstance.prototype, {
 /* Get a setting value, defaulting if necessary. */
 _get: function(name) {
  return (this._settings[name] != null ? this._settings[name] : $.datepicker._defaults[name]);
 },
 /* Parse existing date and initialise date picker. */
 _setDateFromField: function(input) {
  this._input = $(input);
  var dateFormat = this._get('dateFormat');
  var dates = this._input ? this._input.val().split(this._get('rangeSeparator')) : null; 
  this._endDay = this._endMonth = this._endYear = null;
  var date = defaultDate = this._getDefaultDate();
  if (dates.length > 0) {
   var settings = this._getFormatConfig();
   if (dates.length > 1) {
    date = $.datepicker.parseDate(dateFormat, dates[1], settings) || defaultDate;
    this._endDay = date.getDate();
    this._endMonth = date.getMonth();
    this._endYear = date.getFullYear();
   }
   try {
    date = $.datepicker.parseDate(dateFormat, dates[0], settings) || defaultDate;
   }
   catch (e) {
    $.datepicker.log(e);
    date = defaultDate;
   }
  }
  this._selectedDay = date.getDate();
  this._drawMonth = this._selectedMonth = date.getMonth();
  this._drawYear = this._selectedYear = date.getFullYear();
  this._currentDay = (dates[0] ? date.getDate() : 0);
  this._currentMonth = (dates[0] ? date.getMonth() : 0);
  this._currentYear = (dates[0] ? date.getFullYear() : 0);
  this._adjustDate();
 },
 
 /* Retrieve the default date shown on opening. */
 _getDefaultDate: function() {
  var date = this._determineDate('defaultDate', new Date());
  var minDate = this._getMinMaxDate('min', true);
  var maxDate = this._getMinMaxDate('max');
  date = (minDate && date < minDate ? minDate : date);
  date = (maxDate && date > maxDate ? maxDate : date);
  return date;
 },
 /* A date may be specified as an exact value or a relative one. */
 _determineDate: function(name, defaultDate) {
  var offsetNumeric = function(offset) {
   var date = new Date();
   date.setDate(date.getDate() + offset);
   return date;
  };
  var offsetString = function(offset, getDaysInMonth) {
   var date = new Date();
   var matches = /^([+-]?[0-9]+)\s*(d|D|w|W|m|M|y|Y)?$/.exec(offset);
   if (matches) {
    var year = date.getFullYear();
    var month = date.getMonth();
    var day = date.getDate();
    switch (matches[2] || 'd') {
     case 'd' : case 'D' :
      day += (matches[1] - 0); break;
     case 'w' : case 'W' :
      day += (matches[1] * 7); break;
     case 'm' : case 'M' :
      month += (matches[1] - 0); 
      day = Math.min(day, getDaysInMonth(year, month));
      break;
     case 'y': case 'Y' :
      year += (matches[1] - 0);
      day = Math.min(day, getDaysInMonth(year, month));
      break;
    }
    date = new Date(year, month, day);
   }
   return date;
  };
  var date = this._get(name);
  return (date == null ? defaultDate :
   (typeof date == 'string' ? offsetString(date, this._getDaysInMonth) :
   (typeof date == 'number' ? offsetNumeric(date) : date)));
 },
 /* Set the date(s) directly. */
 _setDate: function(date, endDate) {
  this._selectedDay = this._currentDay = date.getDate();
  this._drawMonth = this._selectedMonth = this._currentMonth = date.getMonth();
  this._drawYear = this._selectedYear = this._currentYear = date.getFullYear();
  if (this._get('rangeSelect')) {
   if (endDate) {
    this._endDay = endDate.getDate();
    this._endMonth = endDate.getMonth();
    this._endYear = endDate.getFullYear();
   }
   else {
    this._endDay = this._currentDay;
    this._endMonth = this._currentMonth;
    this._endYear = this._currentYear;
   }
  }
  this._adjustDate();
 },
 /* Retrieve the date(s) directly. */
 _getDate: function() {
  var startDate = (!this._currentYear || (this._input && this._input.val() == '') ? null :
   new Date(this._currentYear, this._currentMonth, this._currentDay));
  if (this._get('rangeSelect')) {
   return [startDate, (!this._endYear ? null :
    new Date(this._endYear, this._endMonth, this._endDay))];
  }
  else {
   return startDate;
  }
 },
 /* Generate the HTML for the current state of the date picker. */
 _generateDatepicker: function() {
  var today = new Date();
  today = new Date(today.getFullYear(), today.getMonth(), today.getDate()); // clear time
  var showStatus = this._get('showStatus');
  var isRTL = this._get('isRTL');
  // build the date picker HTML
  var clear = (this._get('mandatory') ? '' :
   '<div class="datepicker_clear"><a onclick="jQuery.datepicker._clearDate(' + this._id + ');"' + 
   (showStatus ? this._addStatus(this._get('clearStatus') || '&#xa0;') : '') + '>' +
   this._get('clearText') + '</a></div>');
  var controls = '<div class="datepicker_control">' + (isRTL ? '' : clear) +
   '<div class="datepicker_close"><a onclick="jQuery.datepicker.hideDatepicker();"' +
   (showStatus ? this._addStatus(this._get('closeStatus') || '&#xa0;') : '') + '>' +
   this._get('closeText') + '</a></div>' + (isRTL ? clear : '')  + '</div>';
  var prompt = this._get('prompt');
  var closeAtTop = this._get('closeAtTop');
  var hideIfNoPrevNext = this._get('hideIfNoPrevNext');
  var numMonths = this._getNumberOfMonths();
  var stepMonths = this._get('stepMonths');
  var isMultiMonth = (numMonths[0] != 1 || numMonths[1] != 1);
  var minDate = this._getMinMaxDate('min', true);
  var maxDate = this._getMinMaxDate('max');
  var drawMonth = this._drawMonth;
  var drawYear = this._drawYear;
  if (maxDate) {
   var maxDraw = new Date(maxDate.getFullYear(),
    maxDate.getMonth() - numMonths[1] + 1, maxDate.getDate());
   maxDraw = (minDate && maxDraw < minDate ? minDate : maxDraw);
   while (new Date(drawYear, drawMonth, 1) > maxDraw) {
    drawMonth--;
    if (drawMonth < 0) {
     drawMonth = 11;
     drawYear--;
    }
   }
  }
  // controls and links
  var prev = '<div class="datepicker_prev">' + (this._canAdjustMonth(-1, drawYear, drawMonth) ? 
   '<a onclick="jQuery.datepicker._adjustDate(' + this._id + ', -' + stepMonths + ', \'M\');"' +
   (showStatus ? this._addStatus(this._get('prevStatus') || '&#xa0;') : '') + '>' +
   this._get('prevText') + '</a>' :
   (hideIfNoPrevNext ? '' : '<label>' + this._get('prevText') + '</label>')) + '</div>';
  var next = '<div class="datepicker_next">' + (this._canAdjustMonth(+1, drawYear, drawMonth) ?
   '<a onclick="jQuery.datepicker._adjustDate(' + this._id + ', +' + stepMonths + ', \'M\');"' +
   (showStatus ? this._addStatus(this._get('nextStatus') || '&#xa0;') : '') + '>' +
   this._get('nextText') + '</a>' :
   (hideIfNoPrevNext ? '>' : '<label>' + this._get('nextText') + '</label>')) + '</div>';
  var html = (prompt ? '<div class="datepicker_prompt">' + prompt + '</div>' : '') +
   (closeAtTop && !this._inline ? controls : '') +
   '<div class="datepicker_links">' + (isRTL ? next : prev) +
   (this._isInRange(today) ? '<div class="datepicker_current">' +
   '<a onclick="jQuery.datepicker._gotoToday(' + this._id + ');"' +
   (showStatus ? this._addStatus(this._get('currentStatus') || '&#xa0;') : '') + '>' +
   this._get('currentText') + '</a></div>' : '') + (isRTL ? prev : next) + '</div>';
  var showWeeks = this._get('showWeeks');
  for (var row = 0; row < numMonths[0]; row++) {
  for (var col = 0; col < numMonths[1]; col++) {
   var selectedDate = new Date(drawYear, drawMonth, this._selectedDay);
   html += '<div class="datepicker_oneMonth' + (col == 0 ? ' datepicker_newRow' : '') + '">' +
    this._generateMonthYearHeader(drawMonth, drawYear, minDate, maxDate,
    selectedDate, row > 0 || col > 0) + // draw month headers
    '<table class="datepicker" cellpadding="0" cellspacing="0"><thead>' + 
    '<tr class="datepicker_titleRow">' +
    (showWeeks ? '<td>' + this._get('weekHeader') + '</td>' : '');
   var firstDay = this._get('firstDay');
   var changeFirstDay = this._get('changeFirstDay');
   var dayNames = this._get('dayNames');
   var dayNamesShort = this._get('dayNamesShort');
   var dayNamesMin = this._get('dayNamesMin');
   for (var dow = 0; dow < 7; dow++) { // days of the week
    var day = (dow + firstDay) % 7;
    var status = this._get('dayStatus') || '&#xa0;';
    status = (status.indexOf('DD') > -1 ? status.replace(/DD/, dayNames[day]) :
     status.replace(/D/, dayNamesShort[day]));
    html += '<td' + ((dow + firstDay + 6) % 7 >= 5 ? ' class="datepicker_weekEndCell"' : '') + '>' +
     (!changeFirstDay ? '<span' :
     '<a onclick="jQuery.datepicker._changeFirstDay(' + this._id + ', ' + day + ');"') + 
     (showStatus ? this._addStatus(status) : '') + ' title="' + dayNames[day] + '">' +
     dayNamesMin[day] + (changeFirstDay ? '</a>' : '</span>') + '</td>';
   }
   html += '</tr></thead><tbody>';
   var daysInMonth = this._getDaysInMonth(drawYear, drawMonth);
   if (drawYear == this._selectedYear && drawMonth == this._selectedMonth) {
    this._selectedDay = Math.min(this._selectedDay, daysInMonth);
   }
   var leadDays = (this._getFirstDayOfMonth(drawYear, drawMonth) - firstDay + 7) % 7;
   var currentDate = (!this._currentDay ? new Date(9999, 9, 9) :
    new Date(this._currentYear, this._currentMonth, this._currentDay));
   var endDate = this._endDay ? new Date(this._endYear, this._endMonth, this._endDay) : currentDate;
   var printDate = new Date(drawYear, drawMonth, 1 - leadDays);
   var numRows = (isMultiMonth ? 6 : Math.ceil((leadDays + daysInMonth) / 7)); // calculate the number of rows to generate
   var beforeShowDay = this._get('beforeShowDay');
   var showOtherMonths = this._get('showOtherMonths');
   var calculateWeek = this._get('calculateWeek') || $.datepicker.iso8601Week;
   var dateStatus = this._get('statusForDate') || $.datepicker.dateStatus;
   for (var dRow = 0; dRow < numRows; dRow++) { // create date picker rows
    html += '<tr class="datepicker_daysRow">' +
     (showWeeks ? '<td class="datepicker_weekCol">' + calculateWeek(printDate) + '</td>' : '');
    for (var dow = 0; dow < 7; dow++) { // create date picker days
     var daySettings = (beforeShowDay ?
      beforeShowDay.apply((this._input ? this._input[0] : null), [printDate]) : [true, '']);
     var otherMonth = (printDate.getMonth() != drawMonth);
     var unselectable = otherMonth || !daySettings[0] ||
      (minDate && printDate < minDate) || (maxDate && printDate > maxDate);
     html += '<td class="datepicker_daysCell' +
      ((dow + firstDay + 6) % 7 >= 5 ? ' datepicker_weekEndCell' : '') + // highlight weekends
      (otherMonth ? ' datepicker_otherMonth' : '') + // highlight days from other months
      (printDate.getTime() == selectedDate.getTime() && drawMonth == this._selectedMonth ?
      ' datepicker_daysCellOver' : '') + // highlight selected day
      (unselectable ? ' datepicker_unselectable' : '') +  // highlight unselectable days
      (otherMonth && !showOtherMonths ? '' : ' ' + daySettings[1] + // highlight custom dates
      (printDate.getTime() >= currentDate.getTime() && printDate.getTime() <= endDate.getTime() ?  // in current range
      ' datepicker_currentDay' : '') + // highlight selected day
      (printDate.getTime() == today.getTime() ? ' datepicker_today' : '')) + '"' + // highlight today (if different)
      (unselectable ? '' : ' onmouseover="jQuery(this).addClass(\'datepicker_daysCellOver\');' +
      (!showStatus || (otherMonth && !showOtherMonths) ? '' : 'jQuery(\'#datepicker_status_' +
      this._id + '\').html(\'' + (dateStatus.apply((this._input ? this._input[0] : null),
      [printDate, this]) || '&#xa0;') +'\');') + '"' +
      ' onmouseout="jQuery(this).removeClass(\'datepicker_daysCellOver\');' +
      (!showStatus || (otherMonth && !showOtherMonths) ? '' : 'jQuery(\'#datepicker_status_' +
      this._id + '\').html(\'&#xa0;\');') + '" onclick="jQuery.datepicker._selectDay(' +
      this._id + ',' + drawMonth + ',' + drawYear + ', this);"') + '>' + // actions
      (otherMonth ? (showOtherMonths ? printDate.getDate() : '&#xa0;') : // display for other months
      (unselectable ? printDate.getDate() : '<a>' + printDate.getDate() + '</a>')) + '</td>'; // display for this month
     printDate.setDate(printDate.getDate() + 1);
    }
    html += '</tr>';
   }
   drawMonth++;
   if (drawMonth > 11) {
    drawMonth = 0;
    drawYear++;
   }
   html += '</tbody></table></div>';
  }
  }
  html += (showStatus ? '<div id="datepicker_status_' + this._id + 
   '" class="datepicker_status">' + (this._get('initStatus') || '&#xa0;') + '</div>' : '') +
   (!closeAtTop && !this._inline ? controls : '') +
   '<div style="clear: both;"></div>' + 
   ($.browser.msie && parseInt($.browser.version) < 7 && !this._inline ? 
   '<iframe src="javascript:false;" class="datepicker_cover"></iframe>' : '');
  return html;
 },
 
 /* Generate the month and year header. */
 _generateMonthYearHeader: function(drawMonth, drawYear, minDate, maxDate, selectedDate, secondary) {
  minDate = (this._rangeStart && minDate && selectedDate < minDate ? selectedDate : minDate);
  var showStatus = this._get('showStatus');
  var html = '<div class="datepicker_header">';
  // month selection
  var monthNames = this._get('monthNames');
  if (secondary || !this._get('changeMonth')) {
   html += monthNames[drawMonth] + '&#xa0;';
  }
  else {
   var inMinYear = (minDate && minDate.getFullYear() == drawYear);
   var inMaxYear = (maxDate && maxDate.getFullYear() == drawYear);
   html += '<select class="datepicker_newMonth" ' +
    'onchange="jQuery.datepicker._selectMonthYear(' + this._id + ', this, \'M\');" ' +
    'onclick="jQuery.datepicker._clickMonthYear(' + this._id + ');"' +
    (showStatus ? this._addStatus(this._get('monthStatus') || '&#xa0;') : '') + '>';
   for (var month = 0; month < 12; month++) {
    if ((!inMinYear || month >= minDate.getMonth()) &&
      (!inMaxYear || month <= maxDate.getMonth())) {
     html += '<option value="' + month + '"' +
      (month == drawMonth ? ' selected="selected"' : '') +
      '>' + monthNames[month] + '</option>';
    }
   }
   html += '</select>';
  }
  // year selection
  if (secondary || !this._get('changeYear')) {
   html += drawYear;
  }
  else {
   // determine range of years to display
   var years = this._get('yearRange').split(':');
   var year = 0;
   var endYear = 0;
   if (years.length != 2) {
    year = drawYear - 10;
    endYear = drawYear + 10;
   }
   else if (years[0].charAt(0) == '+' || years[0].charAt(0) == '-') {
    year = drawYear + parseInt(years[0], 10);
    endYear = drawYear + parseInt(years[1], 10);
   }
   else {
    year = parseInt(years[0], 10);
    endYear = parseInt(years[1], 10);
   }
   year = (minDate ? Math.max(year, minDate.getFullYear()) : year);
   endYear = (maxDate ? Math.min(endYear, maxDate.getFullYear()) : endYear);
   html += '<select class="datepicker_newYear" ' +
    'onchange="jQuery.datepicker._selectMonthYear(' + this._id + ', this, \'Y\');" ' +
    'onclick="jQuery.datepicker._clickMonthYear(' + this._id + ');"' +
    (showStatus ? this._addStatus(this._get('yearStatus') || '&#xa0;') : '') + '>';
   for (; year <= endYear; year++) {
    html += '<option value="' + year + '"' +
     (year == drawYear ? ' selected="selected"' : '') +
     '>' + year + '</option>';
   }
   html += '</select>';
  }
  html += '</div>'; // Close datepicker_header
  return html;
 },
 /* Provide code to set and clear the status panel. */
 _addStatus: function(text) {
  return ' onmouseover="jQuery(\'#datepicker_status_' + this._id + '\').html(\'' + text + '\');" ' +
   'onmouseout="jQuery(\'#datepicker_status_' + this._id + '\').html(\'&#xa0;\');"';
 },
 /* Adjust one of the date sub-fields. */
 _adjustDate: function(offset, period) {
  var year = this._drawYear + (period == 'Y' ? offset : 0);
  var month = this._drawMonth + (period == 'M' ? offset : 0);
  var day = Math.min(this._selectedDay, this._getDaysInMonth(year, month)) +
   (period == 'D' ? offset : 0);
  var date = new Date(year, month, day);
  // ensure it is within the bounds set
  var minDate = this._getMinMaxDate('min', true);
  var maxDate = this._getMinMaxDate('max');
  date = (minDate && date < minDate ? minDate : date);
  date = (maxDate && date > maxDate ? maxDate : date);
  this._selectedDay = date.getDate();
  this._drawMonth = this._selectedMonth = date.getMonth();
  this._drawYear = this._selectedYear = date.getFullYear();
 },
 
 /* Determine the number of months to show. */
 _getNumberOfMonths: function() {
  var numMonths = this._get('numberOfMonths');
  return (numMonths == null ? [1, 1] : (typeof numMonths == 'number' ? [1, numMonths] : numMonths));
 },
 /* Determine the current maximum date - ensure no time components are set - may be overridden for a range. */
 _getMinMaxDate: function(minMax, checkRange) {
  var date = this._determineDate(minMax + 'Date', null);
  if (date) {
   date.setHours(0);
   date.setMinutes(0);
   date.setSeconds(0);
   date.setMilliseconds(0);
  }
  return date || (checkRange ? this._rangeStart : null);
 },
 /* Find the number of days in a given month. */
 _getDaysInMonth: function(year, month) {
  return 32 - new Date(year, month, 32).getDate();
 },
 /* Find the day of the week of the first of a month. */
 _getFirstDayOfMonth: function(year, month) {
  return new Date(year, month, 1).getDay();
 },
 /* Determines if we should allow a "next/prev" month display change. */
 _canAdjustMonth: function(offset, curYear, curMonth) {
  var numMonths = this._getNumberOfMonths();
  var date = new Date(curYear, curMonth + (offset < 0 ? offset : numMonths[1]), 1);
  if (offset < 0) {
   date.setDate(this._getDaysInMonth(date.getFullYear(), date.getMonth()));
  }
  return this._isInRange(date);
 },
 /* Is the given date in the accepted range? */
 _isInRange: function(date) {
  // during range selection, use minimum of selected date and range start
  var newMinDate = (!this._rangeStart ? null :
   new Date(this._selectedYear, this._selectedMonth, this._selectedDay));
  newMinDate = (newMinDate && this._rangeStart < newMinDate ? this._rangeStart : newMinDate);
  var minDate = newMinDate || this._getMinMaxDate('min');
  var maxDate = this._getMinMaxDate('max');
  return ((!minDate || date >= minDate) && (!maxDate || date <= maxDate));
 },
 
 /* Provide the configuration settings for formatting/parsing. */
 _getFormatConfig: function() {
  var shortYearCutoff = this._get('shortYearCutoff');
  shortYearCutoff = (typeof shortYearCutoff != 'string' ? shortYearCutoff :
   new Date().getFullYear() % 100 + parseInt(shortYearCutoff, 10));
  return {shortYearCutoff: shortYearCutoff,
   dayNamesShort: this._get('dayNamesShort'), dayNames: this._get('dayNames'),
   monthNamesShort: this._get('monthNamesShort'), monthNames: this._get('monthNames')};
 },
 /* Format the given date for display. */
 _formatDate: function(day, month, year) {
  if (!day) {
   this._currentDay = this._selectedDay;
   this._currentMonth = this._selectedMonth;
   this._currentYear = this._selectedYear;
  }
  var date = (day ? (typeof day == 'object' ? day : new Date(year, month, day)) :
   new Date(this._currentYear, this._currentMonth, this._currentDay));
  return $.datepicker.formatDate(this._get('dateFormat'), date, this._getFormatConfig());
 }
});
/* jQuery extend now ignores nulls! */
function extendRemove(target, props) {
 $.extend(target, props);
 for (var name in props) {
  if (props[name] == null) {
   target[name] = null;
  }
 }
 return target;
};
/* Invoke the datepicker functionality.
   @param  options  String - a command, optionally followed by additional parameters or
                    Object - settings for attaching new datepicker functionality
   @return  jQuery object */
$.fn.datepicker = function(options){
 var otherArgs = Array.prototype.slice.call(arguments, 1);
 if (typeof options == 'string' && (options == 'isDisabled' || options == 'getDate')) {
  return $.datepicker['_' + options + 'Datepicker'].apply($.datepicker, [this[0]].concat(otherArgs));
 }
 return this.each(function() {
  typeof options == 'string' ?
   $.datepicker['_' + options + 'Datepicker'].apply($.datepicker, [this].concat(otherArgs)) :
   $.datepicker._attachDatepicker(this, options);
 });
};
 
/* Initialise the date picker. */
$(document).ready(function() {
 $.datepicker = new Datepicker(); // singleton instance
 $(document.body).append($.datepicker._datepickerDiv).
  mousedown($.datepicker._checkExternalClick);
});
})(jQuery);
//-->