js/ui/jquery.ui.datepicker.js

   1 /*
   2  * jQuery UI Datepicker 1.8.10
   3  *
   4  * Copyright 2011, AUTHORS.txt (http://jqueryui.com/about)
   5  * Dual licensed under the MIT or GPL Version 2 licenses.
   6  * http://jquery.org/license
   7  *
   8  * http://docs.jquery.com/UI/Datepicker
   9  *
  10  * Depends:
  11  *      jquery.ui.core.js
  12  */
  13 (function( $, undefined ) {
  14
  15 $.extend($.ui, { datepicker: { version: "1.8.10" } });
  16
  17 var PROP_NAME = 'datepicker';
  18 var dpuuid = new Date().getTime();
  19
  20 /* Date picker manager.
  21    Use the singleton instance of this class, $.datepicker, to interact with the date picker.
  22    Settings for (groups of) date pickers are maintained in an instance object,
  23    allowing multiple different settings on the same page. */
  24
  25 function Datepicker() {
  26         this.debug = false; // Change this to true to start debugging
  27         this._curInst = null; // The current instance in use
  28         this._keyEvent = false; // If the last event was a key event
  29         this._disabledInputs = []; // List of date picker inputs that have been disabled
  30         this._datepickerShowing = false; // True if the popup picker is showing , false if not
  31         this._inDialog = false; // True if showing within a "dialog", false if not
  32         this._mainDivId = 'ui-datepicker-div'; // The ID of the main datepicker division
  33         this._inlineClass = 'ui-datepicker-inline'; // The name of the inline marker class
  34         this._appendClass = 'ui-datepicker-append'; // The name of the append marker class
  35         this._triggerClass = 'ui-datepicker-trigger'; // The name of the trigger marker class
  36         this._dialogClass = 'ui-datepicker-dialog'; // The name of the dialog marker class
  37         this._disableClass = 'ui-datepicker-disabled'; // The name of the disabled covering marker class
  38         this._unselectableClass = 'ui-datepicker-unselectable'; // The name of the unselectable cell marker class
  39         this._currentClass = 'ui-datepicker-current-day'; // The name of the current day marker class
  40         this._dayOverClass = 'ui-datepicker-days-cell-over'; // The name of the day hover marker class
  41         this.regional = []; // Available regional settings, indexed by language code
  42         this.regional[''] = { // Default regional settings
  43                 closeText: 'Done', // Display text for close link
  44                 prevText: 'Prev', // Display text for previous month link
  45                 nextText: 'Next', // Display text for next month link
  46                 currentText: 'Today', // Display text for current month link
  47                 monthNames: ['January','February','March','April','May','June',
  48                         'July','August','September','October','November','December'], // Names of months for drop-down and formatting
  49                 monthNamesShort: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'], // For formatting
  50                 dayNames: ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'], // For formatting
  51                 dayNamesShort: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'], // For formatting
  52                 dayNamesMin: ['Su','Mo','Tu','We','Th','Fr','Sa'], // Column headings for days starting at Sunday
  53                 weekHeader: 'Wk', // Column header for week of the year
  54                 dateFormat: 'mm/dd/yy', // See format options on parseDate
  55                 firstDay: 0, // The first day of the week, Sun = 0, Mon = 1, ...
  56                 isRTL: false, // True if right-to-left language, false if left-to-right
  57                 showMonthAfterYear: false, // True if the year select precedes month, false for month then year
  58                 yearSuffix: '' // Additional text to append to the year in the month headers
  59         };
  60         this._defaults = { // Global defaults for all the date picker instances
  61                 showOn: 'focus', // 'focus' for popup on focus,
  62                         // 'button' for trigger button, or 'both' for either
  63                 showAnim: 'fadeIn', // Name of jQuery animation for popup
  64                 showOptions: {}, // Options for enhanced animations
  65                 defaultDate: null, // Used when field is blank: actual date,
  66                         // +/-number for offset from today, null for today
  67                 appendText: '', // Display text following the input box, e.g. showing the format
  68                 buttonText: '...', // Text for trigger button
  69                 buttonImage: '', // URL for trigger button image
  70                 buttonImageOnly: false, // True if the image appears alone, false if it appears on a button
  71                 hideIfNoPrevNext: false, // True to hide next/previous month links
  72                         // if not applicable, false to just disable them
  73                 navigationAsDateFormat: false, // True if date formatting applied to prev/today/next links
  74                 gotoCurrent: false, // True if today link goes back to current selection instead
  75                 changeMonth: false, // True if month can be selected directly, false if only prev/next
  76                 changeYear: false, // True if year can be selected directly, false if only prev/next
  77                 yearRange: 'c-10:c+10', // Range of years to display in drop-down,
  78                         // either relative to today's year (-nn:+nn), relative to currently displayed year
  79                         // (c-nn:c+nn), absolute (nnnn:nnnn), or a combination of the above (nnnn:-n)
  80                 showOtherMonths: false, // True to show dates in other months, false to leave blank
  81                 selectOtherMonths: false, // True to allow selection of dates in other months, false for unselectable
  82                 showWeek: false, // True to show week of the year, false to not show it
  83                 calculateWeek: this.iso8601Week, // How to calculate the week of the year,
  84                         // takes a Date and returns the number of the week for it
  85                 shortYearCutoff: '+10', // Short year values < this are in the current century,
  86                         // > this are in the previous century,
  87                         // string value starting with '+' for current year + value
  88                 minDate: null, // The earliest selectable date, or null for no limit
  89                 maxDate: null, // The latest selectable date, or null for no limit
  90                 duration: 'fast', // Duration of display/closure
  91                 beforeShowDay: null, // Function that takes a date and returns an array with
  92                         // [0] = true if selectable, false if not, [1] = custom CSS class name(s) or '',
  93                         // [2] = cell title (optional), e.g. $.datepicker.noWeekends
  94                 beforeShow: null, // Function that takes an input field and
  95                         // returns a set of custom settings for the date picker
  96                 onSelect: null, // Define a callback function when a date is selected
  97                 onChangeMonthYear: null, // Define a callback function when the month or year is changed
  98                 onClose: null, // Define a callback function when the datepicker is closed
  99                 numberOfMonths: 1, // Number of months to show at a time
 100                 showCurrentAtPos: 0, // The position in multipe months at which to show the current month (starting at 0)
 101                 stepMonths: 1, // Number of months to step back/forward
 102                 stepBigMonths: 12, // Number of months to step back/forward for the big links
 103                 altField: '', // Selector for an alternate field to store selected dates into
 104                 altFormat: '', // The date format to use for the alternate field
 105                 constrainInput: true, // The input is constrained by the current date format
 106                 showButtonPanel: false, // True to show button panel, false to not show it
 107                 autoSize: false // True to size the input for the date format, false to leave as is
 108         };
 109         $.extend(this._defaults, this.regional['']);
 110         this.dpDiv = $('<div id="' + this._mainDivId + '" class="ui-datepicker ui-widget ui-widget-content ui-helper-clearfix ui-corner-all"></div>');
 111 }
 112
 113 $.extend(Datepicker.prototype, {
 114         /* Class name added to elements to indicate already configured with a date picker. */
 115         markerClassName: 'hasDatepicker',
 116
 117         /* Debug logging (if enabled). */
 118         log: function () {
 119                 if (this.debug)
 120                         console.log.apply('', arguments);
 121         },
 122
 123         // TODO rename to "widget" when switching to widget factory
 124         _widgetDatepicker: function() {
 125                 return this.dpDiv;
 126         },
 127
 128         /* Override the default settings for all instances of the date picker.
 129            @param  settings  object - the new settings to use as defaults (anonymous object)
 130            @return the manager object */
 131         setDefaults: function(settings) {
 132                 extendRemove(this._defaults, settings || {});
 133                 return this;
 134         },
 135
 136         /* Attach the date picker to a jQuery selection.
 137            @param  target    element - the target input field or division or span
 138            @param  settings  object - the new settings to use for this date picker instance (anonymous) */
 139         _attachDatepicker: function(target, settings) {
 140                 // check for settings on the control itself - in namespace 'date:'
 141                 var inlineSettings = null;
 142                 for (var attrName in this._defaults) {
 143                         var attrValue = target.getAttribute('date:' + attrName);
 144                         if (attrValue) {
 145                                 inlineSettings = inlineSettings || {};
 146                                 try {
 147                                         inlineSettings[attrName] = eval(attrValue);
 148                                 } catch (err) {
 149                                         inlineSettings[attrName] = attrValue;
 150                                 }
 151                         }
 152                 }
 153                 var nodeName = target.nodeName.toLowerCase();
 154                 var inline = (nodeName == 'div' || nodeName == 'span');
 155                 if (!target.id) {
 156                         this.uuid += 1;
 157                         target.id = 'dp' + this.uuid;
 158                 }
 159                 var inst = this._newInst($(target), inline);
 160                 inst.settings = $.extend({}, settings || {}, inlineSettings || {});
 161                 if (nodeName == 'input') {
 162                         this._connectDatepicker(target, inst);
 163                 } else if (inline) {
 164                         this._inlineDatepicker(target, inst);
 165                 }
 166         },
 167
 168         /* Create a new instance object. */
 169         _newInst: function(target, inline) {
 170                 var id = target[0].id.replace(/([^A-Za-z0-9_-])/g, '\\\\$1'); // escape jQuery meta chars
 171                 return {id: id, input: target, // associated target
 172                         selectedDay: 0, selectedMonth: 0, selectedYear: 0, // current selection
 173                         drawMonth: 0, drawYear: 0, // month being drawn
 174                         inline: inline, // is datepicker inline or not
 175                         dpDiv: (!inline ? this.dpDiv : // presentation div
 176                         $('<div class="' + this._inlineClass + ' ui-datepicker ui-widget ui-widget-content ui-helper-clearfix ui-corner-all"></div>'))};
 177         },
 178
 179         /* Attach the date picker to an input field. */
 180         _connectDatepicker: function(target, inst) {
 181                 var input = $(target);
 182                 inst.append = $([]);
 183                 inst.trigger = $([]);
 184                 if (input.hasClass(this.markerClassName))
 185                         return;
 186                 this._attachments(input, inst);
 187                 input.addClass(this.markerClassName).keydown(this._doKeyDown).
 188                         keypress(this._doKeyPress).keyup(this._doKeyUp).
 189                         bind("setData.datepicker", function(event, key, value) {
 190                                 inst.settings[key] = value;
 191                         }).bind("getData.datepicker", function(event, key) {
 192                                 return this._get(inst, key);
 193                         });
 194                 this._autoSize(inst);
 195                 $.data(target, PROP_NAME, inst);
 196         },
 197
 198         /* Make attachments based on settings. */
 199         _attachments: function(input, inst) {
 200                 var appendText = this._get(inst, 'appendText');
 201                 var isRTL = this._get(inst, 'isRTL');
 202                 if (inst.append)
 203                         inst.append.remove();
 204                 if (appendText) {
 205                         inst.append = $('<span class="' + this._appendClass + '">' + appendText + '</span>');
 206                         input[isRTL ? 'before' : 'after'](inst.append);
 207                 }
 208                 input.unbind('focus', this._showDatepicker);
 209                 if (inst.trigger)
 210                         inst.trigger.remove();
 211                 var showOn = this._get(inst, 'showOn');
 212                 if (showOn == 'focus' || showOn == 'both') // pop-up date picker when in the marked field
 213                         input.focus(this._showDatepicker);
 214                 if (showOn == 'button' || showOn == 'both') { // pop-up date picker when button clicked
 215                         var buttonText = this._get(inst, 'buttonText');
 216                         var buttonImage = this._get(inst, 'buttonImage');
 217                         inst.trigger = $(this._get(inst, 'buttonImageOnly') ?
 218                                 $('<img/>').addClass(this._triggerClass).
 219                                         attr({ src: buttonImage, alt: buttonText, title: buttonText }) :
 220                                 $('<button type="button"></button>').addClass(this._triggerClass).
 221                                         html(buttonImage == '' ? buttonText : $('<img/>').attr(
 222                                         { src:buttonImage, alt:buttonText, title:buttonText })));
 223                         input[isRTL ? 'before' : 'after'](inst.trigger);
 224                         inst.trigger.click(function() {
 225                                 if ($.datepicker._datepickerShowing && $.datepicker._lastInput == input[0])
 226                                         $.datepicker._hideDatepicker();
 227                                 else
 228                                         $.datepicker._showDatepicker(input[0]);
 229                                 return false;
 230                         });
 231                 }
 232         },
 233
 234         /* Apply the maximum length for the date format. */
 235         _autoSize: function(inst) {
 236                 if (this._get(inst, 'autoSize') && !inst.inline) {
 237                         var date = new Date(2009, 12 - 1, 20); // Ensure double digits
 238                         var dateFormat = this._get(inst, 'dateFormat');
 239                         if (dateFormat.match(/[DM]/)) {
 240                                 var findMax = function(names) {
 241                                         var max = 0;
 242                                         var maxI = 0;
 243                                         for (var i = 0; i < names.length; i++) {
 244                                                 if (names[i].length > max) {
 245                                                         max = names[i].length;
 246                                                         maxI = i;
 247                                                 }
 248                                         }
 249                                         return maxI;
 250                                 };
 251                                 date.setMonth(findMax(this._get(inst, (dateFormat.match(/MM/) ?
 252                                         'monthNames' : 'monthNamesShort'))));
 253                                 date.setDate(findMax(this._get(inst, (dateFormat.match(/DD/) ?
 254                                         'dayNames' : 'dayNamesShort'))) + 20 - date.getDay());
 255                         }
 256                         inst.input.attr('size', this._formatDate(inst, date).length);
 257                 }
 258         },
 259
 260         /* Attach an inline date picker to a div. */
 261         _inlineDatepicker: function(target, inst) {
 262                 var divSpan = $(target);
 263                 if (divSpan.hasClass(this.markerClassName))
 264                         return;
 265                 divSpan.addClass(this.markerClassName).append(inst.dpDiv).
 266                         bind("setData.datepicker", function(event, key, value){
 267                                 inst.settings[key] = value;
 268                         }).bind("getData.datepicker", function(event, key){
 269                                 return this._get(inst, key);
 270                         });
 271                 $.data(target, PROP_NAME, inst);
 272                 this._setDate(inst, this._getDefaultDate(inst), true);
 273                 this._updateDatepicker(inst);
 274                 this._updateAlternate(inst);
 275                 inst.dpDiv.show();
 276         },
 277
 278         /* Pop-up the date picker in a "dialog" box.
 279            @param  input     element - ignored
 280            @param  date      string or Date - the initial date to display
 281            @param  onSelect  function - the function to call when a date is selected
 282            @param  settings  object - update the dialog date picker instance's settings (anonymous object)
 283            @param  pos       int[2] - coordinates for the dialog's position within the screen or
 284                              event - with x/y coordinates or
 285                              leave empty for default (screen centre)
 286            @return the manager object */
 287         _dialogDatepicker: function(input, date, onSelect, settings, pos) {
 288                 var inst = this._dialogInst; // internal instance
 289                 if (!inst) {
 290                         this.uuid += 1;
 291                         var id = 'dp' + this.uuid;
 292                         this._dialogInput = $('<input type="text" id="' + id +
 293                                 '" style="position: absolute; top: -100px; width: 0px; z-index: -10;"/>');
 294                         this._dialogInput.keydown(this._doKeyDown);
 295                         $('body').append(this._dialogInput);
 296                         inst = this._dialogInst = this._newInst(this._dialogInput, false);
 297                         inst.settings = {};
 298                         $.data(this._dialogInput[0], PROP_NAME, inst);
 299                 }
 300                 extendRemove(inst.settings, settings || {});
 301                 date = (date && date.constructor == Date ? this._formatDate(inst, date) : date);
 302                 this._dialogInput.val(date);
 303
 304                 this._pos = (pos ? (pos.length ? pos : [pos.pageX, pos.pageY]) : null);
 305                 if (!this._pos) {
 306                         var browserWidth = document.documentElement.clientWidth;
 307                         var browserHeight = document.documentElement.clientHeight;
 308                         var scrollX = document.documentElement.scrollLeft || document.body.scrollLeft;
 309                         var scrollY = document.documentElement.scrollTop || document.body.scrollTop;
 310                         this._pos = // should use actual width/height below
 311                                 [(browserWidth / 2) - 100 + scrollX, (browserHeight / 2) - 150 + scrollY];
 312                 }
 313
 314                 // move input on screen for focus, but hidden behind dialog
 315                 this._dialogInput.css('left', (this._pos[0] + 20) + 'px').css('top', this._pos[1] + 'px');
 316                 inst.settings.onSelect = onSelect;
 317                 this._inDialog = true;
 318                 this.dpDiv.addClass(this._dialogClass);
 319                 this._showDatepicker(this._dialogInput[0]);
 320                 if ($.blockUI)
 321                         $.blockUI(this.dpDiv);
 322                 $.data(this._dialogInput[0], PROP_NAME, inst);
 323                 return this;
 324         },
 325
 326         /* Detach a datepicker from its control.
 327            @param  target    element - the target input field or division or span */
 328         _destroyDatepicker: function(target) {
 329                 var $target = $(target);
 330                 var inst = $.data(target, PROP_NAME);
 331                 if (!$target.hasClass(this.markerClassName)) {
 332                         return;
 333                 }
 334                 var nodeName = target.nodeName.toLowerCase();
 335                 $.removeData(target, PROP_NAME);
 336                 if (nodeName == 'input') {
 337                         inst.append.remove();
 338                         inst.trigger.remove();
 339                         $target.removeClass(this.markerClassName).
 340                                 unbind('focus', this._showDatepicker).
 341                                 unbind('keydown', this._doKeyDown).
 342                                 unbind('keypress', this._doKeyPress).
 343                                 unbind('keyup', this._doKeyUp);
 344                 } else if (nodeName == 'div' || nodeName == 'span')
 345                         $target.removeClass(this.markerClassName).empty();
 346         },
 347
 348         /* Enable the date picker to a jQuery selection.
 349            @param  target    element - the target input field or division or span */
 350         _enableDatepicker: function(target) {
 351                 var $target = $(target);
 352                 var inst = $.data(target, PROP_NAME);
 353                 if (!$target.hasClass(this.markerClassName)) {
 354                         return;
 355                 }
 356                 var nodeName = target.nodeName.toLowerCase();
 357                 if (nodeName == 'input') {
 358                         target.disabled = false;
 359                         inst.trigger.filter('button').
 360                                 each(function() { this.disabled = false; }).end().
 361                                 filter('img').css({opacity: '1.0', cursor: ''});
 362                 }
 363                 else if (nodeName == 'div' || nodeName == 'span') {
 364                         var inline = $target.children('.' + this._inlineClass);
 365                         inline.children().removeClass('ui-state-disabled');
 366                 }
 367                 this._disabledInputs = $.map(this._disabledInputs,
 368                         function(value) { return (value == target ? null : value); }); // delete entry
 369         },
 370
 371         /* Disable the date picker to a jQuery selection.
 372            @param  target    element - the target input field or division or span */
 373         _disableDatepicker: function(target) {
 374                 var $target = $(target);
 375                 var inst = $.data(target, PROP_NAME);
 376                 if (!$target.hasClass(this.markerClassName)) {
 377                         return;
 378                 }
 379                 var nodeName = target.nodeName.toLowerCase();
 380                 if (nodeName == 'input') {
 381                         target.disabled = true;
 382                         inst.trigger.filter('button').
 383                                 each(function() { this.disabled = true; }).end().
 384                                 filter('img').css({opacity: '0.5', cursor: 'default'});
 385                 }
 386                 else if (nodeName == 'div' || nodeName == 'span') {
 387                         var inline = $target.children('.' + this._inlineClass);
 388                         inline.children().addClass('ui-state-disabled');
 389                 }
 390                 this._disabledInputs = $.map(this._disabledInputs,
 391                         function(value) { return (value == target ? null : value); }); // delete entry
 392                 this._disabledInputs[this._disabledInputs.length] = target;
 393         },
 394
 395         /* Is the first field in a jQuery collection disabled as a datepicker?
 396            @param  target    element - the target input field or division or span
 397            @return boolean - true if disabled, false if enabled */
 398         _isDisabledDatepicker: function(target) {
 399                 if (!target) {
 400                         return false;
 401                 }
 402                 for (var i = 0; i < this._disabledInputs.length; i++) {
 403                         if (this._disabledInputs[i] == target)
 404                                 return true;
 405                 }
 406                 return false;
 407         },
 408
 409         /* Retrieve the instance data for the target control.
 410            @param  target  element - the target input field or division or span
 411            @return  object - the associated instance data
 412            @throws  error if a jQuery problem getting data */
 413         _getInst: function(target) {
 414                 try {
 415                         return $.data(target, PROP_NAME);
 416                 }
 417                 catch (err) {
 418                         throw 'Missing instance data for this datepicker';
 419                 }
 420         },
 421
 422         /* Update or retrieve the settings for a date picker attached to an input field or division.
 423            @param  target  element - the target input field or division or span
 424            @param  name    object - the new settings to update or
 425                            string - the name of the setting to change or retrieve,
 426                            when retrieving also 'all' for all instance settings or
 427                            'defaults' for all global defaults
 428            @param  value   any - the new value for the setting
 429                            (omit if above is an object or to retrieve a value) */
 430         _optionDatepicker: function(target, name, value) {
 431                 var inst = this._getInst(target);
 432                 if (arguments.length == 2 && typeof name == 'string') {
 433                         return (name == 'defaults' ? $.extend({}, $.datepicker._defaults) :
 434                                 (inst ? (name == 'all' ? $.extend({}, inst.settings) :
 435                                 this._get(inst, name)) : null));
 436                 }
 437                 var settings = name || {};
 438                 if (typeof name == 'string') {
 439                         settings = {};
 440                         settings[name] = value;
 441                 }
 442                 if (inst) {
 443                         if (this._curInst == inst) {
 444                                 this._hideDatepicker();
 445                         }
 446                         var date = this._getDateDatepicker(target, true);
 447                         extendRemove(inst.settings, settings);
 448                         this._attachments($(target), inst);
 449                         this._autoSize(inst);
 450                         this._setDateDatepicker(target, date);
 451                         this._updateDatepicker(inst);
 452                 }
 453         },
 454
 455         // change method deprecated
 456         _changeDatepicker: function(target, name, value) {
 457                 this._optionDatepicker(target, name, value);
 458         },
 459
 460         /* Redraw the date picker attached to an input field or division.
 461            @param  target  element - the target input field or division or span */
 462         _refreshDatepicker: function(target) {
 463                 var inst = this._getInst(target);
 464                 if (inst) {
 465                         this._updateDatepicker(inst);
 466                 }
 467         },
 468
 469         /* Set the dates for a jQuery selection.
 470            @param  target   element - the target input field or division or span
 471            @param  date     Date - the new date */
 472         _setDateDatepicker: function(target, date) {
 473                 var inst = this._getInst(target);
 474                 if (inst) {
 475                         this._setDate(inst, date);
 476                         this._updateDatepicker(inst);
 477                         this._updateAlternate(inst);
 478                 }
 479         },
 480
 481         /* Get the date(s) for the first entry in a jQuery selection.
 482            @param  target     element - the target input field or division or span
 483            @param  noDefault  boolean - true if no default date is to be used
 484            @return Date - the current date */
 485         _getDateDatepicker: function(target, noDefault) {
 486                 var inst = this._getInst(target);
 487                 if (inst && !inst.inline)
 488                         this._setDateFromField(inst, noDefault);
 489                 return (inst ? this._getDate(inst) : null);
 490         },
 491
 492         /* Handle keystrokes. */
 493         _doKeyDown: function(event) {
 494                 var inst = $.datepicker._getInst(event.target);
 495                 var handled = true;
 496                 var isRTL = inst.dpDiv.is('.ui-datepicker-rtl');
 497                 inst._keyEvent = true;
 498                 if ($.datepicker._datepickerShowing)
 499                         switch (event.keyCode) {
 500                                 case 9: $.datepicker._hideDatepicker();
 501                                                 handled = false;
 502                                                 break; // hide on tab out
 503                                 case 13: var sel = $('td.' + $.datepicker._dayOverClass + ':not(.' +
 504                                                                         $.datepicker._currentClass + ')', inst.dpDiv);
 505                                                 if (sel[0])
 506                                                         $.datepicker._selectDay(event.target, inst.selectedMonth, inst.selectedYear, sel[0]);
 507                                                 else
 508                                                         $.datepicker._hideDatepicker();
 509                                                 return false; // don't submit the form
 510                                                 break; // select the value on enter
 511                                 case 27: $.datepicker._hideDatepicker();
 512                                                 break; // hide on escape
 513                                 case 33: $.datepicker._adjustDate(event.target, (event.ctrlKey ?
 514                                                         -$.datepicker._get(inst, 'stepBigMonths') :
 515                                                         -$.datepicker._get(inst, 'stepMonths')), 'M');
 516                                                 break; // previous month/year on page up/+ ctrl
 517                                 case 34: $.datepicker._adjustDate(event.target, (event.ctrlKey ?
 518                                                         +$.datepicker._get(inst, 'stepBigMonths') :
 519                                                         +$.datepicker._get(inst, 'stepMonths')), 'M');
 520                                                 break; // next month/year on page down/+ ctrl
 521                                 case 35: if (event.ctrlKey || event.metaKey) $.datepicker._clearDate(event.target);
 522                                                 handled = event.ctrlKey || event.metaKey;
 523                                                 break; // clear on ctrl or command +end
 524                                 case 36: if (event.ctrlKey || event.metaKey) $.datepicker._gotoToday(event.target);
 525                                                 handled = event.ctrlKey || event.metaKey;
 526                                                 break; // current on ctrl or command +home
 527                                 case 37: if (event.ctrlKey || event.metaKey) $.datepicker._adjustDate(event.target, (isRTL ? +1 : -1), 'D');
 528                                                 handled = event.ctrlKey || event.metaKey;
 529                                                 // -1 day on ctrl or command +left
 530                                                 if (event.originalEvent.altKey) $.datepicker._adjustDate(event.target, (event.ctrlKey ?
 531                                                                         -$.datepicker._get(inst, 'stepBigMonths') :
 532                                                                         -$.datepicker._get(inst, 'stepMonths')), 'M');
 533                                                 // next month/year on alt +left on Mac
 534                                                 break;
 535                                 case 38: if (event.ctrlKey || event.metaKey) $.datepicker._adjustDate(event.target, -7, 'D');
 536                                                 handled = event.ctrlKey || event.metaKey;
 537                                                 break; // -1 week on ctrl or command +up
 538                                 case 39: if (event.ctrlKey || event.metaKey) $.datepicker._adjustDate(event.target, (isRTL ? -1 : +1), 'D');
 539                                                 handled = event.ctrlKey || event.metaKey;
 540                                                 // +1 day on ctrl or command +right
 541                                                 if (event.originalEvent.altKey) $.datepicker._adjustDate(event.target, (event.ctrlKey ?
 542                                                                         +$.datepicker._get(inst, 'stepBigMonths') :
 543                                                                         +$.datepicker._get(inst, 'stepMonths')), 'M');
 544                                                 // next month/year on alt +right
 545                                                 break;
 546                                 case 40: if (event.ctrlKey || event.metaKey) $.datepicker._adjustDate(event.target, +7, 'D');
 547                                                 handled = event.ctrlKey || event.metaKey;
 548                                                 break; // +1 week on ctrl or command +down
 549                                 default: handled = false;
 550                         }
 551                 else if (event.keyCode == 36 && event.ctrlKey) // display the date picker on ctrl+home
 552                         $.datepicker._showDatepicker(this);
 553                 else {
 554                         handled = false;
 555                 }
 556                 if (handled) {
 557                         event.preventDefault();
 558                         event.stopPropagation();
 559                 }
 560         },
 561
 562         /* Filter entered characters - based on date format. */
 563         _doKeyPress: function(event) {
 564                 var inst = $.datepicker._getInst(event.target);
 565                 if ($.datepicker._get(inst, 'constrainInput')) {
 566                         var chars = $.datepicker._possibleChars($.datepicker._get(inst, 'dateFormat'));
 567                         var chr = String.fromCharCode(event.charCode == undefined ? event.keyCode : event.charCode);
 568                         return event.ctrlKey || event.metaKey || (chr < ' ' || !chars || chars.indexOf(chr) > -1);
 569                 }
 570         },
 571
 572         /* Synchronise manual entry and field/alternate field. */
 573         _doKeyUp: function(event) {
 574                 var inst = $.datepicker._getInst(event.target);
 575                 if (inst.input.val() != inst.lastVal) {
 576                         try {
 577                                 var date = $.datepicker.parseDate($.datepicker._get(inst, 'dateFormat'),
 578                                         (inst.input ? inst.input.val() : null),
 579                                         $.datepicker._getFormatConfig(inst));
 580                                 if (date) { // only if valid
 581                                         $.datepicker._setDateFromField(inst);
 582                                         $.datepicker._updateAlternate(inst);
 583                                         $.datepicker._updateDatepicker(inst);
 584                                 }
 585                         }
 586                         catch (event) {
 587                                 $.datepicker.log(event);
 588                         }
 589                 }
 590                 return true;
 591         },
 592
 593         /* Pop-up the date picker for a given input field.
 594            @param  input  element - the input field attached to the date picker or
 595                           event - if triggered by focus */
 596         _showDatepicker: function(input) {
 597                 input = input.target || input;
 598                 if (input.nodeName.toLowerCase() != 'input') // find from button/image trigger
 599                         input = $('input', input.parentNode)[0];
 600                 if ($.datepicker._isDisabledDatepicker(input) || $.datepicker._lastInput == input) // already here
 601                         return;
 602                 var inst = $.datepicker._getInst(input);
 603                 if ($.datepicker._curInst && $.datepicker._curInst != inst) {
 604                         $.datepicker._curInst.dpDiv.stop(true, true);
 605                 }
 606                 var beforeShow = $.datepicker._get(inst, 'beforeShow');
 607                 extendRemove(inst.settings, (beforeShow ? beforeShow.apply(input, [input, inst]) : {}));
 608                 inst.lastVal = null;
 609                 $.datepicker._lastInput = input;
 610                 $.datepicker._setDateFromField(inst);
 611                 if ($.datepicker._inDialog) // hide cursor
 612                         input.value = '';
 613                 if (!$.datepicker._pos) { // position below input
 614                         $.datepicker._pos = $.datepicker._findPos(input);
 615                         $.datepicker._pos[1] += input.offsetHeight; // add the height
 616                 }
 617                 var isFixed = false;
 618                 $(input).parents().each(function() {
 619                         isFixed |= $(this).css('position') == 'fixed';
 620                         return !isFixed;
 621                 });
 622                 if (isFixed && $.browser.opera) { // correction for Opera when fixed and scrolled
 623                         $.datepicker._pos[0] -= document.documentElement.scrollLeft;
 624                         $.datepicker._pos[1] -= document.documentElement.scrollTop;
 625                 }
 626                 var offset = {left: $.datepicker._pos[0], top: $.datepicker._pos[1]};
 627                 $.datepicker._pos = null;
 628                 //to avoid flashes on Firefox
 629                 inst.dpDiv.empty();
 630                 // determine sizing offscreen
 631                 inst.dpDiv.css({position: 'absolute', display: 'block', top: '-1000px'});
 632                 $.datepicker._updateDatepicker(inst);
 633                 // fix width for dynamic number of date pickers
 634                 // and adjust position before showing
 635                 offset = $.datepicker._checkOffset(inst, offset, isFixed);
 636                 inst.dpDiv.css({position: ($.datepicker._inDialog && $.blockUI ?
 637                         'static' : (isFixed ? 'fixed' : 'absolute')), display: 'none',
 638                         left: offset.left + 'px', top: offset.top + 'px'});
 639                 if (!inst.inline) {
 640                         var showAnim = $.datepicker._get(inst, 'showAnim');
 641                         var duration = $.datepicker._get(inst, 'duration');
 642                         var postProcess = function() {
 643                                 $.datepicker._datepickerShowing = true;
 644                                 var cover = inst.dpDiv.find('iframe.ui-datepicker-cover'); // IE6- only
 645                                 if( !! cover.length ){
 646                                         var borders = $.datepicker._getBorders(inst.dpDiv);
 647                                         cover.css({left: -borders[0], top: -borders[1],
 648                                                 width: inst.dpDiv.outerWidth(), height: inst.dpDiv.outerHeight()});
 649                                 }
 650                         };
 651                         inst.dpDiv.zIndex($(input).zIndex()+1);
 652                         if ($.effects && $.effects[showAnim])
 653                                 inst.dpDiv.show(showAnim, $.datepicker._get(inst, 'showOptions'), duration, postProcess);
 654                         else
 655                                 inst.dpDiv[showAnim || 'show']((showAnim ? duration : null), postProcess);
 656                         if (!showAnim || !duration)
 657                                 postProcess();
 658                         if (inst.input.is(':visible') && !inst.input.is(':disabled'))
 659                                 inst.input.focus();
 660                         $.datepicker._curInst = inst;
 661                 }
 662         },
 663
 664         /* Generate the date picker content. */
 665         _updateDatepicker: function(inst) {
 666                 var self = this;
 667                 var borders = $.datepicker._getBorders(inst.dpDiv);
 668                 inst.dpDiv.empty().append(this._generateHTML(inst));
 669                 var cover = inst.dpDiv.find('iframe.ui-datepicker-cover'); // IE6- only
 670                 if( !!cover.length ){ //avoid call to outerXXXX() when not in IE6
 671                         cover.css({left: -borders[0], top: -borders[1], width: inst.dpDiv.outerWidth(), height: inst.dpDiv.outerHeight()})
 672                 }
 673                 inst.dpDiv.find('button, .ui-datepicker-prev, .ui-datepicker-next, .ui-datepicker-calendar td a')
 674                                 .bind('mouseout', function(){
 675                                         $(this).removeClass('ui-state-hover');
 676                                         if(this.className.indexOf('ui-datepicker-prev') != -1) $(this).removeClass('ui-datepicker-prev-hover');
 677                                         if(this.className.indexOf('ui-datepicker-next') != -1) $(this).removeClass('ui-datepicker-next-hover');
 678                                 })
 679                                 .bind('mouseover', function(){
 680                                         if (!self._isDisabledDatepicker( inst.inline ? inst.dpDiv.parent()[0] : inst.input[0])) {
 681                                                 $(this).parents('.ui-datepicker-calendar').find('a').removeClass('ui-state-hover');
 682                                                 $(this).addClass('ui-state-hover');
 683                                                 if(this.className.indexOf('ui-datepicker-prev') != -1) $(this).addClass('ui-datepicker-prev-hover');
 684                                                 if(this.className.indexOf('ui-datepicker-next') != -1) $(this).addClass('ui-datepicker-next-hover');
 685                                         }
 686                                 })
 687                         .end()
 688                         .find('.' + this._dayOverClass + ' a')
 689                                 .trigger('mouseover')
 690                         .end();
 691                 var numMonths = this._getNumberOfMonths(inst);
 692                 var cols = numMonths[1];
 693                 var width = 17;
 694                 if (cols > 1)
 695                         inst.dpDiv.addClass('ui-datepicker-multi-' + cols).css('width', (width * cols) + 'em');
 696                 else
 697                         inst.dpDiv.removeClass('ui-datepicker-multi-2 ui-datepicker-multi-3 ui-datepicker-multi-4').width('');
 698                 inst.dpDiv[(numMonths[0] != 1 || numMonths[1] != 1 ? 'add' : 'remove') +
 699                         'Class']('ui-datepicker-multi');
 700                 inst.dpDiv[(this._get(inst, 'isRTL') ? 'add' : 'remove') +
 701                         'Class']('ui-datepicker-rtl');
 702                 if (inst == $.datepicker._curInst && $.datepicker._datepickerShowing && inst.input &&
 703                                 // #6694 - don't focus the input if it's already focused
 704                                 // this breaks the change event in IE
 705                                 inst.input.is(':visible') && !inst.input.is(':disabled') && inst.input[0] != document.activeElement)
 706                         inst.input.focus();
 707                 // deffered render of the years select (to avoid flashes on Firefox)
 708                 if( inst.yearshtml ){
 709                         var origyearshtml = inst.yearshtml;
 710                         setTimeout(function(){
 711                                 //assure that inst.yearshtml didn't change.
 712                                 if( origyearshtml === inst.yearshtml ){
 713                                         inst.dpDiv.find('select.ui-datepicker-year:first').replaceWith(inst.yearshtml);
 714                                 }
 715                                 origyearshtml = inst.yearshtml = null;
 716                         }, 0);
 717                 }
 718         },
 719
 720         /* Retrieve the size of left and top borders for an element.
 721            @param  elem  (jQuery object) the element of interest
 722            @return  (number[2]) the left and top borders */
 723         _getBorders: function(elem) {
 724                 var convert = function(value) {
 725                         return {thin: 1, medium: 2, thick: 3}[value] || value;
 726                 };
 727                 return [parseFloat(convert(elem.css('border-left-width'))),
 728                         parseFloat(convert(elem.css('border-top-width')))];
 729         },
 730
 731         /* Check positioning to remain on screen. */
 732         _checkOffset: function(inst, offset, isFixed) {
 733                 var dpWidth = inst.dpDiv.outerWidth();
 734                 var dpHeight = inst.dpDiv.outerHeight();
 735                 var inputWidth = inst.input ? inst.input.outerWidth() : 0;
 736                 var inputHeight = inst.input ? inst.input.outerHeight() : 0;
 737                 var viewWidth = document.documentElement.clientWidth + $(document).scrollLeft();
 738                 var viewHeight = document.documentElement.clientHeight + $(document).scrollTop();
 739
 740                 offset.left -= (this._get(inst, 'isRTL') ? (dpWidth - inputWidth) : 0);
 741                 offset.left -= (isFixed && offset.left == inst.input.offset().left) ? $(document).scrollLeft() : 0;
 742                 offset.top -= (isFixed && offset.top == (inst.input.offset().top + inputHeight)) ? $(document).scrollTop() : 0;
 743
 744                 // now check if datepicker is showing outside window viewport - move to a better place if so.
 745                 offset.left -= Math.min(offset.left, (offset.left + dpWidth > viewWidth && viewWidth > dpWidth) ?
 746                         Math.abs(offset.left + dpWidth - viewWidth) : 0);
 747                 offset.top -= Math.min(offset.top, (offset.top + dpHeight > viewHeight && viewHeight > dpHeight) ?
 748                         Math.abs(dpHeight + inputHeight) : 0);
 749
 750                 return offset;
 751         },
 752
 753         /* Find an object's position on the screen. */
 754         _findPos: function(obj) {
 755                 var inst = this._getInst(obj);
 756                 var isRTL = this._get(inst, 'isRTL');
 757         while (obj && (obj.type == 'hidden' || obj.nodeType != 1 || $.expr.filters.hidden(obj))) {
 758             obj = obj[isRTL ? 'previousSibling' : 'nextSibling'];
 759         }
 760         var position = $(obj).offset();
 761             return [position.left, position.top];
 762         },
 763
 764         /* Hide the date picker from view.
 765            @param  input  element - the input field attached to the date picker */
 766         _hideDatepicker: function(input) {
 767                 var inst = this._curInst;
 768                 if (!inst || (input && inst != $.data(input, PROP_NAME)))
 769                         return;
 770                 if (this._datepickerShowing) {
 771                         var showAnim = this._get(inst, 'showAnim');
 772                         var duration = this._get(inst, 'duration');
 773                         var postProcess = function() {
 774                                 $.datepicker._tidyDialog(inst);
 775                                 this._curInst = null;
 776                         };
 777                         if ($.effects && $.effects[showAnim])
 778                                 inst.dpDiv.hide(showAnim, $.datepicker._get(inst, 'showOptions'), duration, postProcess);
 779                         else
 780                                 inst.dpDiv[(showAnim == 'slideDown' ? 'slideUp' :
 781                                         (showAnim == 'fadeIn' ? 'fadeOut' : 'hide'))]((showAnim ? duration : null), postProcess);
 782                         if (!showAnim)
 783                                 postProcess();
 784                         var onClose = this._get(inst, 'onClose');
 785                         if (onClose)
 786                                 onClose.apply((inst.input ? inst.input[0] : null),
 787                                         [(inst.input ? inst.input.val() : ''), inst]);  // trigger custom callback
 788                         this._datepickerShowing = false;
 789                         this._lastInput = null;
 790                         if (this._inDialog) {
 791                                 this._dialogInput.css({ position: 'absolute', left: '0', top: '-100px' });
 792                                 if ($.blockUI) {
 793                                         $.unblockUI();
 794                                         $('body').append(this.dpDiv);
 795                                 }
 796                         }
 797                         this._inDialog = false;
 798                 }
 799         },
 800
 801         /* Tidy up after a dialog display. */
 802         _tidyDialog: function(inst) {
 803                 inst.dpDiv.removeClass(this._dialogClass).unbind('.ui-datepicker-calendar');
 804         },
 805
 806         /* Close date picker if clicked elsewhere. */
 807         _checkExternalClick: function(event) {
 808                 if (!$.datepicker._curInst)
 809                         return;
 810                 var $target = $(event.target);
 811                 if ($target[0].id != $.datepicker._mainDivId &&
 812                                 $target.parents('#' + $.datepicker._mainDivId).length == 0 &&
 813                                 !$target.hasClass($.datepicker.markerClassName) &&
 814                                 !$target.hasClass($.datepicker._triggerClass) &&
 815                                 $.datepicker._datepickerShowing && !($.datepicker._inDialog && $.blockUI))
 816                         $.datepicker._hideDatepicker();
 817         },
 818
 819         /* Adjust one of the date sub-fields. */
 820         _adjustDate: function(id, offset, period) {
 821                 var target = $(id);
 822                 var inst = this._getInst(target[0]);
 823                 if (this._isDisabledDatepicker(target[0])) {
 824                         return;
 825                 }
 826                 this._adjustInstDate(inst, offset +
 827                         (period == 'M' ? this._get(inst, 'showCurrentAtPos') : 0), // undo positioning
 828                         period);
 829                 this._updateDatepicker(inst);
 830         },
 831
 832         /* Action for current link. */
 833         _gotoToday: function(id) {
 834                 var target = $(id);
 835                 var inst = this._getInst(target[0]);
 836                 if (this._get(inst, 'gotoCurrent') && inst.currentDay) {
 837                         inst.selectedDay = inst.currentDay;
 838                         inst.drawMonth = inst.selectedMonth = inst.currentMonth;
 839                         inst.drawYear = inst.selectedYear = inst.currentYear;
 840                 }
 841                 else {
 842                         var date = new Date();
 843                         inst.selectedDay = date.getDate();
 844                         inst.drawMonth = inst.selectedMonth = date.getMonth();
 845                         inst.drawYear = inst.selectedYear = date.getFullYear();
 846                 }
 847                 this._notifyChange(inst);
 848                 this._adjustDate(target);
 849         },
 850
 851         /* Action for selecting a new month/year. */
 852         _selectMonthYear: function(id, select, period) {
 853                 var target = $(id);
 854                 var inst = this._getInst(target[0]);
 855                 inst._selectingMonthYear = false;
 856                 inst['selected' + (period == 'M' ? 'Month' : 'Year')] =
 857                 inst['draw' + (period == 'M' ? 'Month' : 'Year')] =
 858                         parseInt(select.options[select.selectedIndex].value,10);
 859                 this._notifyChange(inst);
 860                 this._adjustDate(target);
 861         },
 862
 863         /* Restore input focus after not changing month/year. */
 864         _clickMonthYear: function(id) {
 865                 var target = $(id);
 866                 var inst = this._getInst(target[0]);
 867                 if (inst.input && inst._selectingMonthYear) {
 868                         setTimeout(function() {
 869                                 inst.input.focus();
 870                         }, 0);
 871                 }
 872                 inst._selectingMonthYear = !inst._selectingMonthYear;
 873         },
 874
 875         /* Action for selecting a day. */
 876         _selectDay: function(id, month, year, td) {
 877                 var target = $(id);
 878                 if ($(td).hasClass(this._unselectableClass) || this._isDisabledDatepicker(target[0])) {
 879                         return;
 880                 }
 881                 var inst = this._getInst(target[0]);
 882                 inst.selectedDay = inst.currentDay = $('a', td).html();
 883                 inst.selectedMonth = inst.currentMonth = month;
 884                 inst.selectedYear = inst.currentYear = year;
 885                 this._selectDate(id, this._formatDate(inst,
 886                         inst.currentDay, inst.currentMonth, inst.currentYear));
 887         },
 888
 889         /* Erase the input field and hide the date picker. */
 890         _clearDate: function(id) {
 891                 var target = $(id);
 892                 var inst = this._getInst(target[0]);
 893                 this._selectDate(target, '');
 894         },
 895
 896         /* Update the input field with the selected date. */
 897         _selectDate: function(id, dateStr) {
 898                 var target = $(id);
 899                 var inst = this._getInst(target[0]);
 900                 dateStr = (dateStr != null ? dateStr : this._formatDate(inst));
 901                 if (inst.input)
 902                         inst.input.val(dateStr);
 903                 this._updateAlternate(inst);
 904                 var onSelect = this._get(inst, 'onSelect');
 905                 if (onSelect)
 906                         onSelect.apply((inst.input ? inst.input[0] : null), [dateStr, inst]);  // trigger custom callback
 907                 else if (inst.input)
 908                         inst.input.trigger('change'); // fire the change event
 909                 if (inst.inline)
 910                         this._updateDatepicker(inst);
 911                 else {
 912                         this._hideDatepicker();
 913                         this._lastInput = inst.input[0];
 914                         if (typeof(inst.input[0]) != 'object')
 915                                 inst.input.focus(); // restore focus
 916                         this._lastInput = null;
 917                 }
 918         },
 919
 920         /* Update any alternate field to synchronise with the main field. */
 921         _updateAlternate: function(inst) {
 922                 var altField = this._get(inst, 'altField');
 923                 if (altField) { // update alternate field too
 924                         var altFormat = this._get(inst, 'altFormat') || this._get(inst, 'dateFormat');
 925                         var date = this._getDate(inst);
 926                         var dateStr = this.formatDate(altFormat, date, this._getFormatConfig(inst));
 927                         $(altField).each(function() { $(this).val(dateStr); });
 928                 }
 929         },
 930
 931         /* Set as beforeShowDay function to prevent selection of weekends.
 932            @param  date  Date - the date to customise
 933            @return [boolean, string] - is this date selectable?, what is its CSS class? */
 934         noWeekends: function(date) {
 935                 var day = date.getDay();
 936                 return [(day > 0 && day < 6), ''];
 937         },
 938
 939         /* Set as calculateWeek to determine the week of the year based on the ISO 8601 definition.
 940            @param  date  Date - the date to get the week for
 941            @return  number - the number of the week within the year that contains this date */
 942         iso8601Week: function(date) {
 943                 var checkDate = new Date(date.getTime());
 944                 // Find Thursday of this week starting on Monday
 945                 checkDate.setDate(checkDate.getDate() + 4 - (checkDate.getDay() || 7));
 946                 var time = checkDate.getTime();
 947                 checkDate.setMonth(0); // Compare with Jan 1
 948                 checkDate.setDate(1);
 949                 return Math.floor(Math.round((time - checkDate) / 86400000) / 7) + 1;
 950         },
 951
 952         /* Parse a string value into a date object.
 953            See formatDate below for the possible formats.
 954
 955            @param  format    string - the expected format of the date
 956            @param  value     string - the date in the above format
 957            @param  settings  Object - attributes include:
 958                              shortYearCutoff  number - the cutoff year for determining the century (optional)
 959                              dayNamesShort    string[7] - abbreviated names of the days from Sunday (optional)
 960                              dayNames         string[7] - names of the days from Sunday (optional)
 961                              monthNamesShort  string[12] - abbreviated names of the months (optional)
 962                              monthNames       string[12] - names of the months (optional)
 963            @return  Date - the extracted date value or null if value is blank */
 964         parseDate: function (format, value, settings) {
 965                 if (format == null || value == null)
 966                         throw 'Invalid arguments';
 967                 value = (typeof value == 'object' ? value.toString() : value + '');
 968                 if (value == '')
 969                         return null;
 970                 var shortYearCutoff = (settings ? settings.shortYearCutoff : null) || this._defaults.shortYearCutoff;
 971                 shortYearCutoff = (typeof shortYearCutoff != 'string' ? shortYearCutoff :
 972                                 new Date().getFullYear() % 100 + parseInt(shortYearCutoff, 10));
 973                 var dayNamesShort = (settings ? settings.dayNamesShort : null) || this._defaults.dayNamesShort;
 974                 var dayNames = (settings ? settings.dayNames : null) || this._defaults.dayNames;
 975                 var monthNamesShort = (settings ? settings.monthNamesShort : null) || this._defaults.monthNamesShort;
 976                 var monthNames = (settings ? settings.monthNames : null) || this._defaults.monthNames;
 977                 var year = -1;
 978                 var month = -1;
 979                 var day = -1;
 980                 var doy = -1;
 981                 var literal = false;
 982                 // Check whether a format character is doubled
 983                 var lookAhead = function(match) {
 984                         var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) == match);
 985                         if (matches)
 986                                 iFormat++;
 987                         return matches;
 988                 };
 989                 // Extract a number from the string value
 990                 var getNumber = function(match) {
 991                         var isDoubled = lookAhead(match);
 992                         var size = (match == '@' ? 14 : (match == '!' ? 20 :
 993                                 (match == 'y' && isDoubled ? 4 : (match == 'o' ? 3 : 2))));
 994                         var digits = new RegExp('^\\d{1,' + size + '}');
 995                         var num = value.substring(iValue).match(digits);
 996                         if (!num)
 997                                 throw 'Missing number at position ' + iValue;
 998                         iValue += num[0].length;
 999                         return parseInt(num[0], 10);
1000                 };
1001                 // Extract a name from the string value and convert to an index
1002                 var getName = function(match, shortNames, longNames) {
1003                         var names = (lookAhead(match) ? longNames : shortNames);
1004                         for (var i = 0; i < names.length; i++) {
1005                                 if (value.substr(iValue, names[i].length).toLowerCase() == names[i].toLowerCase()) {
1006                                         iValue += names[i].length;
1007                                         return i + 1;
1008                                 }
1009                         }
1010                         throw 'Unknown name at position ' + iValue;
1011                 };
1012                 // Confirm that a literal character matches the string value
1013                 var checkLiteral = function() {
1014                         if (value.charAt(iValue) != format.charAt(iFormat))
1015                                 throw 'Unexpected literal at position ' + iValue;
1016                         iValue++;
1017                 };
1018                 var iValue = 0;
1019                 for (var iFormat = 0; iFormat < format.length; iFormat++) {
1020                         if (literal)
1021                                 if (format.charAt(iFormat) == "'" && !lookAhead("'"))
1022                                         literal = false;
1023                                 else
1024                                         checkLiteral();
1025                         else
1026                                 switch (format.charAt(iFormat)) {
1027                                         case 'd':
1028                                                 day = getNumber('d');
1029                                                 break;
1030                                         case 'D':
1031                                                 getName('D', dayNamesShort, dayNames);
1032                                                 break;
1033                                         case 'o':
1034                                                 doy = getNumber('o');
1035                                                 break;
1036                                         case 'm':
1037                                                 month = getNumber('m');
1038                                                 break;
1039                                         case 'M':
1040                                                 month = getName('M', monthNamesShort, monthNames);
1041                                                 break;
1042                                         case 'y':
1043                                                 year = getNumber('y');
1044                                                 break;
1045                                         case '@':
1046                                                 var date = new Date(getNumber('@'));
1047                                                 year = date.getFullYear();
1048                                                 month = date.getMonth() + 1;
1049                                                 day = date.getDate();
1050                                                 break;
1051                                         case '!':
1052                                                 var date = new Date((getNumber('!') - this._ticksTo1970) / 10000);
1053                                                 year = date.getFullYear();
1054                                                 month = date.getMonth() + 1;
1055                                                 day = date.getDate();
1056                                                 break;
1057                                         case "'":
1058                                                 if (lookAhead("'"))
1059                                                         checkLiteral();
1060                                                 else
1061                                                         literal = true;
1062                                                 break;
1063                                         default:
1064                                                 checkLiteral();
1065                                 }
1066                 }
1067                 if (year == -1)
1068                         year = new Date().getFullYear();
1069                 else if (year < 100)
1070                         year += new Date().getFullYear() - new Date().getFullYear() % 100 +
1071                                 (year <= shortYearCutoff ? 0 : -100);
1072                 if (doy > -1) {
1073                         month = 1;
1074                         day = doy;
1075                         do {
1076                                 var dim = this._getDaysInMonth(year, month - 1);
1077                                 if (day <= dim)
1078                                         break;
1079                                 month++;
1080                                 day -= dim;
1081                         } while (true);
1082                 }
1083                 var date = this._daylightSavingAdjust(new Date(year, month - 1, day));
1084                 if (date.getFullYear() != year || date.getMonth() + 1 != month || date.getDate() != day)
1085                         throw 'Invalid date'; // E.g. 31/02/*
1086                 return date;
1087         },
1088
1089         /* Standard date formats. */
1090         ATOM: 'yy-mm-dd', // RFC 3339 (ISO 8601)
1091         COOKIE: 'D, dd M yy',
1092         ISO_8601: 'yy-mm-dd',
1093         RFC_822: 'D, d M y',
1094         RFC_850: 'DD, dd-M-y',
1095         RFC_1036: 'D, d M y',
1096         RFC_1123: 'D, d M yy',
1097         RFC_2822: 'D, d M yy',
1098         RSS: 'D, d M y', // RFC 822
1099         TICKS: '!',
1100         TIMESTAMP: '@',
1101         W3C: 'yy-mm-dd', // ISO 8601
1102
1103         _ticksTo1970: (((1970 - 1) * 365 + Math.floor(1970 / 4) - Math.floor(1970 / 100) +
1104                 Math.floor(1970 / 400)) * 24 * 60 * 60 * 10000000),
1105
1106         /* Format a date object into a string value.
1107            The format can be combinations of the following:
1108            d  - day of month (no leading zero)
1109            dd - day of month (two digit)
1110            o  - day of year (no leading zeros)
1111            oo - day of year (three digit)
1112            D  - day name short
1113            DD - day name long
1114            m  - month of year (no leading zero)
1115            mm - month of year (two digit)
1116            M  - month name short
1117            MM - month name long
1118            y  - year (two digit)
1119            yy - year (four digit)
1120            @ - Unix timestamp (ms since 01/01/1970)
1121            ! - Windows ticks (100ns since 01/01/0001)
1122            '...' - literal text
1123            '' - single quote
1124
1125            @param  format    string - the desired format of the date
1126            @param  date      Date - the date value to format
1127            @param  settings  Object - attributes include:
1128                              dayNamesShort    string[7] - abbreviated names of the days from Sunday (optional)
1129                              dayNames         string[7] - names of the days from Sunday (optional)
1130                              monthNamesShort  string[12] - abbreviated names of the months (optional)
1131                              monthNames       string[12] - names of the months (optional)
1132            @return  string - the date in the above format */
1133         formatDate: function (format, date, settings) {
1134                 if (!date)
1135                         return '';
1136                 var dayNamesShort = (settings ? settings.dayNamesShort : null) || this._defaults.dayNamesShort;
1137                 var dayNames = (settings ? settings.dayNames : null) || this._defaults.dayNames;
1138                 var monthNamesShort = (settings ? settings.monthNamesShort : null) || this._defaults.monthNamesShort;
1139                 var monthNames = (settings ? settings.monthNames : null) || this._defaults.monthNames;
1140                 // Check whether a format character is doubled
1141                 var lookAhead = function(match) {
1142                         var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) == match);
1143                         if (matches)
1144                                 iFormat++;
1145                         return matches;
1146                 };
1147                 // Format a number, with leading zero if necessary
1148                 var formatNumber = function(match, value, len) {
1149                         var num = '' + value;
1150                         if (lookAhead(match))
1151                                 while (num.length < len)
1152                                         num = '0' + num;
1153                         return num;
1154                 };
1155                 // Format a name, short or long as requested
1156                 var formatName = function(match, value, shortNames, longNames) {
1157                         return (lookAhead(match) ? longNames[value] : shortNames[value]);
1158                 };
1159                 var output = '';
1160                 var literal = false;
1161                 if (date)
1162                         for (var iFormat = 0; iFormat < format.length; iFormat++) {
1163                                 if (literal)
1164                                         if (format.charAt(iFormat) == "'" && !lookAhead("'"))
1165                                                 literal = false;
1166                                         else
1167                                                 output += format.charAt(iFormat);
1168                                 else
1169                                         switch (format.charAt(iFormat)) {
1170                                                 case 'd':
1171                                                         output += formatNumber('d', date.getDate(), 2);
1172                                                         break;
1173                                                 case 'D':
1174                                                         output += formatName('D', date.getDay(), dayNamesShort, dayNames);
1175                                                         break;
1176                                                 case 'o':
1177                                                         output += formatNumber('o',
1178                                                                 (date.getTime() - new Date(date.getFullYear(), 0, 0).getTime()) / 86400000, 3);
1179                                                         break;
1180                                                 case 'm':
1181                                                         output += formatNumber('m', date.getMonth() + 1, 2);
1182                                                         break;
1183                                                 case 'M':
1184                                                         output += formatName('M', date.getMonth(), monthNamesShort, monthNames);
1185                                                         break;
1186                                                 case 'y':
1187                                                         output += (lookAhead('y') ? date.getFullYear() :
1188                                                                 (date.getYear() % 100 < 10 ? '0' : '') + date.getYear() % 100);
1189                                                         break;
1190                                                 case '@':
1191                                                         output += date.getTime();
1192                                                         break;
1193                                                 case '!':
1194                                                         output += date.getTime() * 10000 + this._ticksTo1970;
1195                                                         break;
1196                                                 case "'":
1197                                                         if (lookAhead("'"))
1198                                                                 output += "'";
1199                                                         else
1200                                                                 literal = true;
1201                                                         break;
1202                                                 default:
1203                                                         output += format.charAt(iFormat);
1204                                         }
1205                         }
1206                 return output;
1207         },
1208
1209         /* Extract all possible characters from the date format. */
1210         _possibleChars: function (format) {
1211                 var chars = '';
1212                 var literal = false;
1213                 // Check whether a format character is doubled
1214                 var lookAhead = function(match) {
1215                         var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) == match);
1216                         if (matches)
1217                                 iFormat++;
1218                         return matches;
1219                 };
1220                 for (var iFormat = 0; iFormat < format.length; iFormat++)
1221                         if (literal)
1222                                 if (format.charAt(iFormat) == "'" && !lookAhead("'"))
1223                                         literal = false;
1224                                 else
1225                                         chars += format.charAt(iFormat);
1226                         else
1227                                 switch (format.charAt(iFormat)) {
1228                                         case 'd': case 'm': case 'y': case '@':
1229                                                 chars += '0123456789';
1230                                                 break;
1231                                         case 'D': case 'M':
1232                                                 return null; // Accept anything
1233                                         case "'":
1234                                                 if (lookAhead("'"))
1235                                                         chars += "'";
1236                                                 else
1237                                                         literal = true;
1238                                                 break;
1239                                         default:
1240                                                 chars += format.charAt(iFormat);
1241                                 }
1242                 return chars;
1243         },
1244
1245         /* Get a setting value, defaulting if necessary. */
1246         _get: function(inst, name) {
1247                 return inst.settings[name] !== undefined ?
1248                         inst.settings[name] : this._defaults[name];
1249         },
1250
1251         /* Parse existing date and initialise date picker. */
1252         _setDateFromField: function(inst, noDefault) {
1253                 if (inst.input.val() == inst.lastVal) {
1254                         return;
1255                 }
1256                 var dateFormat = this._get(inst, 'dateFormat');
1257                 var dates = inst.lastVal = inst.input ? inst.input.val() : null;
1258                 var date, defaultDate;
1259                 date = defaultDate = this._getDefaultDate(inst);
1260                 var settings = this._getFormatConfig(inst);
1261                 try {
1262                         date = this.parseDate(dateFormat, dates, settings) || defaultDate;
1263                 } catch (event) {
1264                         this.log(event);
1265                         dates = (noDefault ? '' : dates);
1266                 }
1267                 inst.selectedDay = date.getDate();
1268                 inst.drawMonth = inst.selectedMonth = date.getMonth();
1269                 inst.drawYear = inst.selectedYear = date.getFullYear();
1270                 inst.currentDay = (dates ? date.getDate() : 0);
1271                 inst.currentMonth = (dates ? date.getMonth() : 0);
1272                 inst.currentYear = (dates ? date.getFullYear() : 0);
1273                 this._adjustInstDate(inst);
1274         },
1275
1276         /* Retrieve the default date shown on opening. */
1277         _getDefaultDate: function(inst) {
1278                 return this._restrictMinMax(inst,
1279                         this._determineDate(inst, this._get(inst, 'defaultDate'), new Date()));
1280         },
1281
1282         /* A date may be specified as an exact value or a relative one. */
1283         _determineDate: function(inst, date, defaultDate) {
1284                 var offsetNumeric = function(offset) {
1285                         var date = new Date();
1286                         date.setDate(date.getDate() + offset);
1287                         return date;
1288                 };
1289                 var offsetString = function(offset) {
1290                         try {
1291                                 return $.datepicker.parseDate($.datepicker._get(inst, 'dateFormat'),
1292                                         offset, $.datepicker._getFormatConfig(inst));
1293                         }
1294                         catch (e) {
1295                                 // Ignore
1296                         }
1297                         var date = (offset.toLowerCase().match(/^c/) ?
1298                                 $.datepicker._getDate(inst) : null) || new Date();
1299                         var year = date.getFullYear();
1300                         var month = date.getMonth();
1301                         var day = date.getDate();
1302                         var pattern = /([+-]?[0-9]+)\s*(d|D|w|W|m|M|y|Y)?/g;
1303                         var matches = pattern.exec(offset);
1304                         while (matches) {
1305                                 switch (matches[2] || 'd') {
1306                                         case 'd' : case 'D' :
1307                                                 day += parseInt(matches[1],10); break;
1308                                         case 'w' : case 'W' :
1309                                                 day += parseInt(matches[1],10) * 7; break;
1310                                         case 'm' : case 'M' :
1311                                                 month += parseInt(matches[1],10);
1312                                                 day = Math.min(day, $.datepicker._getDaysInMonth(year, month));
1313                                                 break;
1314                                         case 'y': case 'Y' :
1315                                                 year += parseInt(matches[1],10);
1316                                                 day = Math.min(day, $.datepicker._getDaysInMonth(year, month));
1317                                                 break;
1318                                 }
1319                                 matches = pattern.exec(offset);
1320                         }
1321                         return new Date(year, month, day);
1322                 };
1323                 var newDate = (date == null || date === '' ? defaultDate : (typeof date == 'string' ? offsetString(date) :
1324                         (typeof date == 'number' ? (isNaN(date) ? defaultDate : offsetNumeric(date)) : new Date(date.getTime()))));
1325                 newDate = (newDate && newDate.toString() == 'Invalid Date' ? defaultDate : newDate);
1326                 if (newDate) {
1327                         newDate.setHours(0);
1328                         newDate.setMinutes(0);
1329                         newDate.setSeconds(0);
1330                         newDate.setMilliseconds(0);
1331                 }
1332                 return this._daylightSavingAdjust(newDate);
1333         },
1334
1335         /* Handle switch to/from daylight saving.
1336            Hours may be non-zero on daylight saving cut-over:
1337            > 12 when midnight changeover, but then cannot generate
1338            midnight datetime, so jump to 1AM, otherwise reset.
1339            @param  date  (Date) the date to check
1340            @return  (Date) the corrected date */
1341         _daylightSavingAdjust: function(date) {
1342                 if (!date) return null;
1343                 date.setHours(date.getHours() > 12 ? date.getHours() + 2 : 0);
1344                 return date;
1345         },
1346
1347         /* Set the date(s) directly. */
1348         _setDate: function(inst, date, noChange) {
1349                 var clear = !date;
1350                 var origMonth = inst.selectedMonth;
1351                 var origYear = inst.selectedYear;
1352                 var newDate = this._restrictMinMax(inst, this._determineDate(inst, date, new Date()));
1353                 inst.selectedDay = inst.currentDay = newDate.getDate();
1354                 inst.drawMonth = inst.selectedMonth = inst.currentMonth = newDate.getMonth();
1355                 inst.drawYear = inst.selectedYear = inst.currentYear = newDate.getFullYear();
1356                 if ((origMonth != inst.selectedMonth || origYear != inst.selectedYear) && !noChange)
1357                         this._notifyChange(inst);
1358                 this._adjustInstDate(inst);
1359                 if (inst.input) {
1360                         inst.input.val(clear ? '' : this._formatDate(inst));
1361                 }
1362         },
1363
1364         /* Retrieve the date(s) directly. */
1365         _getDate: function(inst) {
1366                 var startDate = (!inst.currentYear || (inst.input && inst.input.val() == '') ? null :
1367                         this._daylightSavingAdjust(new Date(
1368                         inst.currentYear, inst.currentMonth, inst.currentDay)));
1369                         return startDate;
1370         },
1371
1372         /* Generate the HTML for the current state of the date picker. */
1373         _generateHTML: function(inst) {
1374                 var today = new Date();
1375                 today = this._daylightSavingAdjust(
1376                         new Date(today.getFullYear(), today.getMonth(), today.getDate())); // clear time
1377                 var isRTL = this._get(inst, 'isRTL');
1378                 var showButtonPanel = this._get(inst, 'showButtonPanel');
1379                 var hideIfNoPrevNext = this._get(inst, 'hideIfNoPrevNext');
1380                 var navigationAsDateFormat = this._get(inst, 'navigationAsDateFormat');
1381                 var numMonths = this._getNumberOfMonths(inst);
1382                 var showCurrentAtPos = this._get(inst, 'showCurrentAtPos');
1383                 var stepMonths = this._get(inst, 'stepMonths');
1384                 var isMultiMonth = (numMonths[0] != 1 || numMonths[1] != 1);
1385                 var currentDate = this._daylightSavingAdjust((!inst.currentDay ? new Date(9999, 9, 9) :
1386                         new Date(inst.currentYear, inst.currentMonth, inst.currentDay)));
1387                 var minDate = this._getMinMaxDate(inst, 'min');
1388                 var maxDate = this._getMinMaxDate(inst, 'max');
1389                 var drawMonth = inst.drawMonth - showCurrentAtPos;
1390                 var drawYear = inst.drawYear;
1391                 if (drawMonth < 0) {
1392                         drawMonth += 12;
1393                         drawYear--;
1394                 }
1395                 if (maxDate) {
1396                         var maxDraw = this._daylightSavingAdjust(new Date(maxDate.getFullYear(),
1397                                 maxDate.getMonth() - (numMonths[0] * numMonths[1]) + 1, maxDate.getDate()));
1398                         maxDraw = (minDate && maxDraw < minDate ? minDate : maxDraw);
1399                         while (this._daylightSavingAdjust(new Date(drawYear, drawMonth, 1)) > maxDraw) {
1400                                 drawMonth--;
1401                                 if (drawMonth < 0) {
1402                                         drawMonth = 11;
1403                                         drawYear--;
1404                                 }
1405                         }
1406                 }
1407                 inst.drawMonth = drawMonth;
1408                 inst.drawYear = drawYear;
1409                 var prevText = this._get(inst, 'prevText');
1410                 prevText = (!navigationAsDateFormat ? prevText : this.formatDate(prevText,
1411                         this._daylightSavingAdjust(new Date(drawYear, drawMonth - stepMonths, 1)),
1412                         this._getFormatConfig(inst)));
1413                 var prev = (this._canAdjustMonth(inst, -1, drawYear, drawMonth) ?
1414                         '<a class="ui-datepicker-prev ui-corner-all" onclick="DP_jQuery_' + dpuuid +
1415                         '.datepicker._adjustDate(\'#' + inst.id + '\', -' + stepMonths + ', \'M\');"' +
1416                         ' title="' + prevText + '"><span class="ui-icon ui-icon-circle-triangle-' + ( isRTL ? 'e' : 'w') + '">' + prevText + '</span></a>' :
1417                         (hideIfNoPrevNext ? '' : '<a class="ui-datepicker-prev ui-corner-all ui-state-disabled" title="'+ prevText +'"><span class="ui-icon ui-icon-circle-triangle-' + ( isRTL ? 'e' : 'w') + '">' + prevText + '</span></a>'));
1418                 var nextText = this._get(inst, 'nextText');
1419                 nextText = (!navigationAsDateFormat ? nextText : this.formatDate(nextText,
1420                         this._daylightSavingAdjust(new Date(drawYear, drawMonth + stepMonths, 1)),
1421                         this._getFormatConfig(inst)));
1422                 var next = (this._canAdjustMonth(inst, +1, drawYear, drawMonth) ?
1423                         '<a class="ui-datepicker-next ui-corner-all" onclick="DP_jQuery_' + dpuuid +
1424                         '.datepicker._adjustDate(\'#' + inst.id + '\', +' + stepMonths + ', \'M\');"' +
1425                         ' title="' + nextText + '"><span class="ui-icon ui-icon-circle-triangle-' + ( isRTL ? 'w' : 'e') + '">' + nextText + '</span></a>' :
1426                         (hideIfNoPrevNext ? '' : '<a class="ui-datepicker-next ui-corner-all ui-state-disabled" title="'+ nextText + '"><span class="ui-icon ui-icon-circle-triangle-' + ( isRTL ? 'w' : 'e') + '">' + nextText + '</span></a>'));
1427                 var currentText = this._get(inst, 'currentText');
1428                 var gotoDate = (this._get(inst, 'gotoCurrent') && inst.currentDay ? currentDate : today);
1429                 currentText = (!navigationAsDateFormat ? currentText :
1430                         this.formatDate(currentText, gotoDate, this._getFormatConfig(inst)));
1431                 var controls = (!inst.inline ? '<button type="button" class="ui-datepicker-close ui-state-default ui-priority-primary ui-corner-all" onclick="DP_jQuery_' + dpuuid +
1432                         '.datepicker._hideDatepicker();">' + this._get(inst, 'closeText') + '</button>' : '');
1433                 var buttonPanel = (showButtonPanel) ? '<div class="ui-datepicker-buttonpane ui-widget-content">' + (isRTL ? controls : '') +
1434                         (this._isInRange(inst, gotoDate) ? '<button type="button" class="ui-datepicker-current ui-state-default ui-priority-secondary ui-corner-all" onclick="DP_jQuery_' + dpuuid +
1435                         '.datepicker._gotoToday(\'#' + inst.id + '\');"' +
1436                         '>' + currentText + '</button>' : '') + (isRTL ? '' : controls) + '</div>' : '';
1437                 var firstDay = parseInt(this._get(inst, 'firstDay'),10);
1438                 firstDay = (isNaN(firstDay) ? 0 : firstDay);
1439                 var showWeek = this._get(inst, 'showWeek');
1440                 var dayNames = this._get(inst, 'dayNames');
1441                 var dayNamesShort = this._get(inst, 'dayNamesShort');
1442                 var dayNamesMin = this._get(inst, 'dayNamesMin');
1443                 var monthNames = this._get(inst, 'monthNames');
1444                 var monthNamesShort = this._get(inst, 'monthNamesShort');
1445                 var beforeShowDay = this._get(inst, 'beforeShowDay');
1446                 var showOtherMonths = this._get(inst, 'showOtherMonths');
1447                 var selectOtherMonths = this._get(inst, 'selectOtherMonths');
1448                 var calculateWeek = this._get(inst, 'calculateWeek') || this.iso8601Week;
1449                 var defaultDate = this._getDefaultDate(inst);
1450                 var html = '';
1451                 for (var row = 0; row < numMonths[0]; row++) {
1452                         var group = '';
1453                         for (var col = 0; col < numMonths[1]; col++) {
1454                                 var selectedDate = this._daylightSavingAdjust(new Date(drawYear, drawMonth, inst.selectedDay));
1455                                 var cornerClass = ' ui-corner-all';
1456                                 var calender = '';
1457                                 if (isMultiMonth) {
1458                                         calender += '<div class="ui-datepicker-group';
1459                                         if (numMonths[1] > 1)
1460                                                 switch (col) {
1461                                                         case 0: calender += ' ui-datepicker-group-first';
1462                                                                 cornerClass = ' ui-corner-' + (isRTL ? 'right' : 'left'); break;
1463                                                         case numMonths[1]-1: calender += ' ui-datepicker-group-last';
1464                                                                 cornerClass = ' ui-corner-' + (isRTL ? 'left' : 'right'); break;
1465                                                         default: calender += ' ui-datepicker-group-middle'; cornerClass = ''; break;
1466                                                 }
1467                                         calender += '">';
1468                                 }
1469                                 calender += '<div class="ui-datepicker-header ui-widget-header ui-helper-clearfix' + cornerClass + '">' +
1470                                         (/all|left/.test(cornerClass) && row == 0 ? (isRTL ? next : prev) : '') +
1471                                         (/all|right/.test(cornerClass) && row == 0 ? (isRTL ? prev : next) : '') +
1472                                         this._generateMonthYearHeader(inst, drawMonth, drawYear, minDate, maxDate,
1473                                         row > 0 || col > 0, monthNames, monthNamesShort) + // draw month headers
1474                                         '</div><table class="ui-datepicker-calendar"><thead>' +
1475                                         '<tr>';
1476                                 var thead = (showWeek ? '<th class="ui-datepicker-week-col">' + this._get(inst, 'weekHeader') + '</th>' : '');
1477                                 for (var dow = 0; dow < 7; dow++) { // days of the week
1478                                         var day = (dow + firstDay) % 7;
1479                                         thead += '<th' + ((dow + firstDay + 6) % 7 >= 5 ? ' class="ui-datepicker-week-end"' : '') + '>' +
1480                                                 '<span title="' + dayNames[day] + '">' + dayNamesMin[day] + '</span></th>';
1481                                 }
1482                                 calender += thead + '</tr></thead><tbody>';
1483                                 var daysInMonth = this._getDaysInMonth(drawYear, drawMonth);
1484                                 if (drawYear == inst.selectedYear && drawMonth == inst.selectedMonth)
1485                                         inst.selectedDay = Math.min(inst.selectedDay, daysInMonth);
1486                                 var leadDays = (this._getFirstDayOfMonth(drawYear, drawMonth) - firstDay + 7) % 7;
1487                                 var numRows = (isMultiMonth ? 6 : Math.ceil((leadDays + daysInMonth) / 7)); // calculate the number of rows to generate
1488                                 var printDate = this._daylightSavingAdjust(new Date(drawYear, drawMonth, 1 - leadDays));
1489                                 for (var dRow = 0; dRow < numRows; dRow++) { // create date picker rows
1490                                         calender += '<tr>';
1491                                         var tbody = (!showWeek ? '' : '<td class="ui-datepicker-week-col">' +
1492                                                 this._get(inst, 'calculateWeek')(printDate) + '</td>');
1493                                         for (var dow = 0; dow < 7; dow++) { // create date picker days
1494                                                 var daySettings = (beforeShowDay ?
1495                                                         beforeShowDay.apply((inst.input ? inst.input[0] : null), [printDate]) : [true, '']);
1496                                                 var otherMonth = (printDate.getMonth() != drawMonth);
1497                                                 var unselectable = (otherMonth && !selectOtherMonths) || !daySettings[0] ||
1498                                                         (minDate && printDate < minDate) || (maxDate && printDate > maxDate);
1499                                                 tbody += '<td class="' +
1500                                                         ((dow + firstDay + 6) % 7 >= 5 ? ' ui-datepicker-week-end' : '') + // highlight weekends
1501                                                         (otherMonth ? ' ui-datepicker-other-month' : '') + // highlight days from other months
1502                                                         ((printDate.getTime() == selectedDate.getTime() && drawMonth == inst.selectedMonth && inst._keyEvent) || // user pressed key
1503                                                         (defaultDate.getTime() == printDate.getTime() && defaultDate.getTime() == selectedDate.getTime()) ?
1504                                                         // or defaultDate is current printedDate and defaultDate is selectedDate
1505                                                         ' ' + this._dayOverClass : '') + // highlight selected day
1506                                                         (unselectable ? ' ' + this._unselectableClass + ' ui-state-disabled': '') +  // highlight unselectable days
1507                                                         (otherMonth && !showOtherMonths ? '' : ' ' + daySettings[1] + // highlight custom dates
1508                                                         (printDate.getTime() == currentDate.getTime() ? ' ' + this._currentClass : '') + // highlight selected day
1509                                                         (printDate.getTime() == today.getTime() ? ' ui-datepicker-today' : '')) + '"' + // highlight today (if different)
1510                                                         ((!otherMonth || showOtherMonths) && daySettings[2] ? ' title="' + daySettings[2] + '"' : '') + // cell title
1511                                                         (unselectable ? '' : ' onclick="DP_jQuery_' + dpuuid + '.datepicker._selectDay(\'#' +
1512                                                         inst.id + '\',' + printDate.getMonth() + ',' + printDate.getFullYear() + ', this);return false;"') + '>' + // actions
1513                                                         (otherMonth && !showOtherMonths ? '&#xa0;' : // display for other months
1514                                                         (unselectable ? '<span class="ui-state-default">' + printDate.getDate() + '</span>' : '<a class="ui-state-default' +
1515                                                         (printDate.getTime() == today.getTime() ? ' ui-state-highlight' : '') +
1516                                                         (printDate.getTime() == currentDate.getTime() ? ' ui-state-active' : '') + // highlight selected day
1517                                                         (otherMonth ? ' ui-priority-secondary' : '') + // distinguish dates from other months
1518                                                         '" href="#">' + printDate.getDate() + '</a>')) + '</td>'; // display selectable date
1519                                                 printDate.setDate(printDate.getDate() + 1);
1520                                                 printDate = this._daylightSavingAdjust(printDate);
1521                                         }
1522                                         calender += tbody + '</tr>';
1523                                 }
1524                                 drawMonth++;
1525                                 if (drawMonth > 11) {
1526                                         drawMonth = 0;
1527                                         drawYear++;
1528                                 }
1529                                 calender += '</tbody></table>' + (isMultiMonth ? '</div>' +
1530                                                         ((numMonths[0] > 0 && col == numMonths[1]-1) ? '<div class="ui-datepicker-row-break"></div>' : '') : '');
1531                                 group += calender;
1532                         }
1533                         html += group;
1534                 }
1535                 html += buttonPanel + ($.browser.msie && parseInt($.browser.version,10) < 7 && !inst.inline ?
1536                         '<iframe src="javascript:false;" class="ui-datepicker-cover" frameborder="0"></iframe>' : '');
1537                 inst._keyEvent = false;
1538                 return html;
1539         },
1540
1541         /* Generate the month and year header. */
1542         _generateMonthYearHeader: function(inst, drawMonth, drawYear, minDate, maxDate,
1543                         secondary, monthNames, monthNamesShort) {
1544                 var changeMonth = this._get(inst, 'changeMonth');
1545                 var changeYear = this._get(inst, 'changeYear');
1546                 var showMonthAfterYear = this._get(inst, 'showMonthAfterYear');
1547                 var html = '<div class="ui-datepicker-title">';
1548                 var monthHtml = '';
1549                 // month selection
1550                 if (secondary || !changeMonth)
1551                         monthHtml += '<span class="ui-datepicker-month">' + monthNames[drawMonth] + '</span>';
1552                 else {
1553                         var inMinYear = (minDate && minDate.getFullYear() == drawYear);
1554                         var inMaxYear = (maxDate && maxDate.getFullYear() == drawYear);
1555                         monthHtml += '<select class="ui-datepicker-month" ' +
1556                                 'onchange="DP_jQuery_' + dpuuid + '.datepicker._selectMonthYear(\'#' + inst.id + '\', this, \'M\');" ' +
1557                                 'onclick="DP_jQuery_' + dpuuid + '.datepicker._clickMonthYear(\'#' + inst.id + '\');"' +
1558                                 '>';
1559                         for (var month = 0; month < 12; month++) {
1560                                 if ((!inMinYear || month >= minDate.getMonth()) &&
1561                                                 (!inMaxYear || month <= maxDate.getMonth()))
1562                                         monthHtml += '<option value="' + month + '"' +
1563                                                 (month == drawMonth ? ' selected="selected"' : '') +
1564                                                 '>' + monthNamesShort[month] + '</option>';
1565                         }
1566                         monthHtml += '</select>';
1567                 }
1568                 if (!showMonthAfterYear)
1569                         html += monthHtml + (secondary || !(changeMonth && changeYear) ? '&#xa0;' : '');
1570                 // year selection
1571                 inst.yearshtml = '';
1572                 if (secondary || !changeYear)
1573                         html += '<span class="ui-datepicker-year">' + drawYear + '</span>';
1574                 else {
1575                         // determine range of years to display
1576                         var years = this._get(inst, 'yearRange').split(':');
1577                         var thisYear = new Date().getFullYear();
1578                         var determineYear = function(value) {
1579                                 var year = (value.match(/c[+-].*/) ? drawYear + parseInt(value.substring(1), 10) :
1580                                         (value.match(/[+-].*/) ? thisYear + parseInt(value, 10) :
1581                                         parseInt(value, 10)));
1582                                 return (isNaN(year) ? thisYear : year);
1583                         };
1584                         var year = determineYear(years[0]);
1585                         var endYear = Math.max(year, determineYear(years[1] || ''));
1586                         year = (minDate ? Math.max(year, minDate.getFullYear()) : year);
1587                         endYear = (maxDate ? Math.min(endYear, maxDate.getFullYear()) : endYear);
1588                         inst.yearshtml += '<select class="ui-datepicker-year" ' +
1589                                 'onchange="DP_jQuery_' + dpuuid + '.datepicker._selectMonthYear(\'#' + inst.id + '\', this, \'Y\');" ' +
1590                                 'onclick="DP_jQuery_' + dpuuid + '.datepicker._clickMonthYear(\'#' + inst.id + '\');"' +
1591                                 '>';
1592                         for (; year <= endYear; year++) {
1593                                 inst.yearshtml += '<option value="' + year + '"' +
1594                                         (year == drawYear ? ' selected="selected"' : '') +
1595                                         '>' + year + '</option>';
1596                         }
1597                         inst.yearshtml += '</select>';
1598                         //when showing there is no need for later update
1599                         if( ! $.browser.mozilla ){
1600                                 html += inst.yearshtml;
1601                                 inst.yearshtml = null;
1602                         } else {
1603                                 // will be replaced later with inst.yearshtml
1604                                 html += '<select class="ui-datepicker-year"><option value="' + drawYear + '" selected="selected">' + drawYear + '</option></select>';
1605                         }
1606                 }
1607                 html += this._get(inst, 'yearSuffix');
1608                 if (showMonthAfterYear)
1609                         html += (secondary || !(changeMonth && changeYear) ? '&#xa0;' : '') + monthHtml;
1610                 html += '</div>'; // Close datepicker_header
1611                 return html;
1612         },
1613
1614         /* Adjust one of the date sub-fields. */
1615         _adjustInstDate: function(inst, offset, period) {
1616                 var year = inst.drawYear + (period == 'Y' ? offset : 0);
1617                 var month = inst.drawMonth + (period == 'M' ? offset : 0);
1618                 var day = Math.min(inst.selectedDay, this._getDaysInMonth(year, month)) +
1619                         (period == 'D' ? offset : 0);
1620                 var date = this._restrictMinMax(inst,
1621                         this._daylightSavingAdjust(new Date(year, month, day)));
1622                 inst.selectedDay = date.getDate();
1623                 inst.drawMonth = inst.selectedMonth = date.getMonth();
1624                 inst.drawYear = inst.selectedYear = date.getFullYear();
1625                 if (period == 'M' || period == 'Y')
1626                         this._notifyChange(inst);
1627         },
1628
1629         /* Ensure a date is within any min/max bounds. */
1630         _restrictMinMax: function(inst, date) {
1631                 var minDate = this._getMinMaxDate(inst, 'min');
1632                 var maxDate = this._getMinMaxDate(inst, 'max');
1633                 var newDate = (minDate && date < minDate ? minDate : date);
1634                 newDate = (maxDate && newDate > maxDate ? maxDate : newDate);
1635                 return newDate;
1636         },
1637
1638         /* Notify change of month/year. */
1639         _notifyChange: function(inst) {
1640                 var onChange = this._get(inst, 'onChangeMonthYear');
1641                 if (onChange)
1642                         onChange.apply((inst.input ? inst.input[0] : null),
1643                                 [inst.selectedYear, inst.selectedMonth + 1, inst]);
1644         },
1645
1646         /* Determine the number of months to show. */
1647         _getNumberOfMonths: function(inst) {
1648                 var numMonths = this._get(inst, 'numberOfMonths');
1649                 return (numMonths == null ? [1, 1] : (typeof numMonths == 'number' ? [1, numMonths] : numMonths));
1650         },
1651
1652         /* Determine the current maximum date - ensure no time components are set. */
1653         _getMinMaxDate: function(inst, minMax) {
1654                 return this._determineDate(inst, this._get(inst, minMax + 'Date'), null);
1655         },
1656
1657         /* Find the number of days in a given month. */
1658         _getDaysInMonth: function(year, month) {
1659                 return 32 - this._daylightSavingAdjust(new Date(year, month, 32)).getDate();
1660         },
1661
1662         /* Find the day of the week of the first of a month. */
1663         _getFirstDayOfMonth: function(year, month) {
1664                 return new Date(year, month, 1).getDay();
1665         },
1666
1667         /* Determines if we should allow a "next/prev" month display change. */
1668         _canAdjustMonth: function(inst, offset, curYear, curMonth) {
1669                 var numMonths = this._getNumberOfMonths(inst);
1670                 var date = this._daylightSavingAdjust(new Date(curYear,
1671                         curMonth + (offset < 0 ? offset : numMonths[0] * numMonths[1]), 1));
1672                 if (offset < 0)
1673                         date.setDate(this._getDaysInMonth(date.getFullYear(), date.getMonth()));
1674                 return this._isInRange(inst, date);
1675         },
1676
1677         /* Is the given date in the accepted range? */
1678         _isInRange: function(inst, date) {
1679                 var minDate = this._getMinMaxDate(inst, 'min');
1680                 var maxDate = this._getMinMaxDate(inst, 'max');
1681                 return ((!minDate || date.getTime() >= minDate.getTime()) &&
1682                         (!maxDate || date.getTime() <= maxDate.getTime()));
1683         },
1684
1685         /* Provide the configuration settings for formatting/parsing. */
1686         _getFormatConfig: function(inst) {
1687                 var shortYearCutoff = this._get(inst, 'shortYearCutoff');
1688                 shortYearCutoff = (typeof shortYearCutoff != 'string' ? shortYearCutoff :
1689                         new Date().getFullYear() % 100 + parseInt(shortYearCutoff, 10));
1690                 return {shortYearCutoff: shortYearCutoff,
1691                         dayNamesShort: this._get(inst, 'dayNamesShort'), dayNames: this._get(inst, 'dayNames'),
1692                         monthNamesShort: this._get(inst, 'monthNamesShort'), monthNames: this._get(inst, 'monthNames')};
1693         },
1694
1695         /* Format the given date for display. */
1696         _formatDate: function(inst, day, month, year) {
1697                 if (!day) {
1698                         inst.currentDay = inst.selectedDay;
1699                         inst.currentMonth = inst.selectedMonth;
1700                         inst.currentYear = inst.selectedYear;
1701                 }
1702                 var date = (day ? (typeof day == 'object' ? day :
1703                         this._daylightSavingAdjust(new Date(year, month, day))) :
1704                         this._daylightSavingAdjust(new Date(inst.currentYear, inst.currentMonth, inst.currentDay)));
1705                 return this.formatDate(this._get(inst, 'dateFormat'), date, this._getFormatConfig(inst));
1706         }
1707 });
1708
1709 /* jQuery extend now ignores nulls! */
1710 function extendRemove(target, props) {
1711         $.extend(target, props);
1712         for (var name in props)
1713                 if (props[name] == null || props[name] == undefined)
1714                         target[name] = props[name];
1715         return target;
1716 };
1717
1718 /* Determine whether an object is an array. */
1719 function isArray(a) {
1720         return (a && (($.browser.safari && typeof a == 'object' && a.length) ||
1721                 (a.constructor && a.constructor.toString().match(/\Array\(\)/))));
1722 };
1723
1724 /* Invoke the datepicker functionality.
1725    @param  options  string - a command, optionally followed by additional parameters or
1726                     Object - settings for attaching new datepicker functionality
1727    @return  jQuery object */
1728 $.fn.datepicker = function(options){
1729
1730         /* Verify an empty collection wasn't passed - Fixes #6976 */
1731         if ( !this.length ) {
1732                 return this;
1733         }
1734
1735         /* Initialise the date picker. */
1736         if (!$.datepicker.initialized) {
1737                 $(document).mousedown($.datepicker._checkExternalClick).
1738                         find('body').append($.datepicker.dpDiv);
1739                 $.datepicker.initialized = true;
1740         }
1741
1742         var otherArgs = Array.prototype.slice.call(arguments, 1);
1743         if (typeof options == 'string' && (options == 'isDisabled' || options == 'getDate' || options == 'widget'))
1744                 return $.datepicker['_' + options + 'Datepicker'].
1745                         apply($.datepicker, [this[0]].concat(otherArgs));
1746         if (options == 'option' && arguments.length == 2 && typeof arguments[1] == 'string')
1747                 return $.datepicker['_' + options + 'Datepicker'].
1748                         apply($.datepicker, [this[0]].concat(otherArgs));
1749         return this.each(function() {
1750                 typeof options == 'string' ?
1751                         $.datepicker['_' + options + 'Datepicker'].
1752                                 apply($.datepicker, [this].concat(otherArgs)) :
1753                         $.datepicker._attachDatepicker(this, options);
1754         });
1755 };
1756
1757 $.datepicker = new Datepicker(); // singleton instance
1758 $.datepicker.initialized = false;
1759 $.datepicker.uuid = new Date().getTime();
1760 $.datepicker.version = "1.8.10";
1761
1762 // Workaround for #4055
1763 // Add another global to avoid noConflict issues with inline event handlers
1764 window['DP_jQuery_' + dpuuid] = $;
1765
1766 })(jQuery);