httemplate/elements/calendar.js

   1 /*  Copyright Mihai Bazon, 2002, 2003  |  http://dynarch.com/mishoo/
   2  * ------------------------------------------------------------------
   3  *
   4  * The DHTML Calendar, version 0.9.5 "Your favorite time, bis"
   5  *
   6  * Details and latest version at:
   7  * http://dynarch.com/mishoo/calendar.epl
   8  *
   9  * This script is distributed under the GNU Lesser General Public License.
  10  * Read the entire license text here: http://www.gnu.org/licenses/lgpl.html
  11  */
  12
  13 // $Id: calendar.js,v 1.3 2003-11-07 10:53:35 ivan Exp $
  14
  15 /** The Calendar object constructor. */
  16 Calendar = function (mondayFirst, dateStr, onSelected, onClose) {
  17         // member variables
  18         this.activeDiv = null;
  19         this.currentDateEl = null;
  20         this.getDateStatus = null;
  21         this.timeout = null;
  22         this.onSelected = onSelected || null;
  23         this.onClose = onClose || null;
  24         this.dragging = false;
  25         this.hidden = false;
  26         this.minYear = 1970;
  27         this.maxYear = 2050;
  28         this.dateFormat = Calendar._TT["DEF_DATE_FORMAT"];
  29         this.ttDateFormat = Calendar._TT["TT_DATE_FORMAT"];
  30         this.isPopup = true;
  31         this.weekNumbers = true;
  32         this.mondayFirst = mondayFirst;
  33         this.dateStr = dateStr;
  34         this.ar_days = null;
  35         this.showsTime = false;
  36         this.time24 = true;
  37         // HTML elements
  38         this.table = null;
  39         this.element = null;
  40         this.tbody = null;
  41         this.firstdayname = null;
  42         // Combo boxes
  43         this.monthsCombo = null;
  44         this.yearsCombo = null;
  45         this.hilitedMonth = null;
  46         this.activeMonth = null;
  47         this.hilitedYear = null;
  48         this.activeYear = null;
  49         // Information
  50         this.dateClicked = false;
  51
  52         // one-time initializations
  53         if (typeof Calendar._SDN == "undefined") {
  54                 // table of short day names
  55                 if (typeof Calendar._SDN_len == "undefined")
  56                         Calendar._SDN_len = 3;
  57                 var ar = new Array();
  58                 for (var i = 8; i > 0;) {
  59                         ar[--i] = Calendar._DN[i].substr(0, Calendar._SDN_len);
  60                 }
  61                 Calendar._SDN = ar;
  62                 // table of short month names
  63                 if (typeof Calendar._SMN_len == "undefined")
  64                         Calendar._SMN_len = 3;
  65                 ar = new Array();
  66                 for (var i = 12; i > 0;) {
  67                         ar[--i] = Calendar._MN[i].substr(0, Calendar._SMN_len);
  68                 }
  69                 Calendar._SMN = ar;
  70         }
  71 };
  72
  73 // ** constants
  74
  75 /// "static", needed for event handlers.
  76 Calendar._C = null;
  77
  78 /// detect a special case of "web browser"
  79 Calendar.is_ie = ( /msie/i.test(navigator.userAgent) &&
  80                    !/opera/i.test(navigator.userAgent) );
  81
  82 /// detect Opera browser
  83 Calendar.is_opera = /opera/i.test(navigator.userAgent);
  84
  85 /// detect KHTML-based browsers
  86 Calendar.is_khtml = /Konqueror|Safari|KHTML/i.test(navigator.userAgent);
  87
  88 // BEGIN: UTILITY FUNCTIONS; beware that these might be moved into a separate
  89 //        library, at some point.
  90
  91 Calendar.getAbsolutePos = function(el) {
  92         var SL = 0, ST = 0;
  93         var is_div = /^div$/i.test(el.tagName);
  94         if (is_div && el.scrollLeft)
  95                 SL = el.scrollLeft;
  96         if (is_div && el.scrollTop)
  97                 ST = el.scrollTop;
  98         var r = { x: el.offsetLeft - SL, y: el.offsetTop - ST };
  99         if (el.offsetParent) {
 100                 var tmp = Calendar.getAbsolutePos(el.offsetParent);
 101                 r.x += tmp.x;
 102                 r.y += tmp.y;
 103         }
 104         return r;
 105 };
 106
 107 Calendar.isRelated = function (el, evt) {
 108         var related = evt.relatedTarget;
 109         if (!related) {
 110                 var type = evt.type;
 111                 if (type == "mouseover") {
 112                         related = evt.fromElement;
 113                 } else if (type == "mouseout") {
 114                         related = evt.toElement;
 115                 }
 116         }
 117         while (related) {
 118                 if (related == el) {
 119                         return true;
 120                 }
 121                 related = related.parentNode;
 122         }
 123         return false;
 124 };
 125
 126 Calendar.removeClass = function(el, className) {
 127         if (!(el && el.className)) {
 128                 return;
 129         }
 130         var cls = el.className.split(" ");
 131         var ar = new Array();
 132         for (var i = cls.length; i > 0;) {
 133                 if (cls[--i] != className) {
 134                         ar[ar.length] = cls[i];
 135                 }
 136         }
 137         el.className = ar.join(" ");
 138 };
 139
 140 Calendar.addClass = function(el, className) {
 141         Calendar.removeClass(el, className);
 142         el.className += " " + className;
 143 };
 144
 145 Calendar.getElement = function(ev) {
 146         if (Calendar.is_ie) {
 147                 return window.event.srcElement;
 148         } else {
 149                 return ev.currentTarget;
 150         }
 151 };
 152
 153 Calendar.getTargetElement = function(ev) {
 154         if (Calendar.is_ie) {
 155                 return window.event.srcElement;
 156         } else {
 157                 return ev.target;
 158         }
 159 };
 160
 161 Calendar.stopEvent = function(ev) {
 162         ev || (ev = window.event);
 163         if (Calendar.is_ie) {
 164                 ev.cancelBubble = true;
 165                 ev.returnValue = false;
 166         } else {
 167                 ev.preventDefault();
 168                 ev.stopPropagation();
 169         }
 170         return false;
 171 };
 172
 173 Calendar.addEvent = function(el, evname, func) {
 174         if (el.attachEvent) { // IE
 175                 el.attachEvent("on" + evname, func);
 176         } else if (el.addEventListener) { // Gecko / W3C
 177                 el.addEventListener(evname, func, true);
 178         } else {
 179                 el["on" + evname] = func;
 180         }
 181 };
 182
 183 Calendar.removeEvent = function(el, evname, func) {
 184         if (el.detachEvent) { // IE
 185                 el.detachEvent("on" + evname, func);
 186         } else if (el.removeEventListener) { // Gecko / W3C
 187                 el.removeEventListener(evname, func, true);
 188         } else {
 189                 el["on" + evname] = null;
 190         }
 191 };
 192
 193 Calendar.createElement = function(type, parent) {
 194         var el = null;
 195         if (document.createElementNS) {
 196                 // use the XHTML namespace; IE won't normally get here unless
 197                 // _they_ "fix" the DOM2 implementation.
 198                 el = document.createElementNS("http://www.w3.org/1999/xhtml", type);
 199         } else {
 200                 el = document.createElement(type);
 201         }
 202         if (typeof parent != "undefined") {
 203                 parent.appendChild(el);
 204         }
 205         return el;
 206 };
 207
 208 // END: UTILITY FUNCTIONS
 209
 210 // BEGIN: CALENDAR STATIC FUNCTIONS
 211
 212 /** Internal -- adds a set of events to make some element behave like a button. */
 213 Calendar._add_evs = function(el) {
 214         with (Calendar) {
 215                 addEvent(el, "mouseover", dayMouseOver);
 216                 addEvent(el, "mousedown", dayMouseDown);
 217                 addEvent(el, "mouseout", dayMouseOut);
 218                 if (is_ie) {
 219                         addEvent(el, "dblclick", dayMouseDblClick);
 220                         el.setAttribute("unselectable", true);
 221                 }
 222         }
 223 };
 224
 225 Calendar.findMonth = function(el) {
 226         if (typeof el.month != "undefined") {
 227                 return el;
 228         } else if (typeof el.parentNode.month != "undefined") {
 229                 return el.parentNode;
 230         }
 231         return null;
 232 };
 233
 234 Calendar.findYear = function(el) {
 235         if (typeof el.year != "undefined") {
 236                 return el;
 237         } else if (typeof el.parentNode.year != "undefined") {
 238                 return el.parentNode;
 239         }
 240         return null;
 241 };
 242
 243 Calendar.showMonthsCombo = function () {
 244         var cal = Calendar._C;
 245         if (!cal) {
 246                 return false;
 247         }
 248         var cal = cal;
 249         var cd = cal.activeDiv;
 250         var mc = cal.monthsCombo;
 251         if (cal.hilitedMonth) {
 252                 Calendar.removeClass(cal.hilitedMonth, "hilite");
 253         }
 254         if (cal.activeMonth) {
 255                 Calendar.removeClass(cal.activeMonth, "active");
 256         }
 257         var mon = cal.monthsCombo.getElementsByTagName("div")[cal.date.getMonth()];
 258         Calendar.addClass(mon, "active");
 259         cal.activeMonth = mon;
 260         var s = mc.style;
 261         s.display = "block";
 262         if (cd.navtype < 0)
 263                 s.left = cd.offsetLeft + "px";
 264         else
 265                 s.left = (cd.offsetLeft + cd.offsetWidth - mc.offsetWidth) + "px";
 266         s.top = (cd.offsetTop + cd.offsetHeight) + "px";
 267 };
 268
 269 Calendar.showYearsCombo = function (fwd) {
 270         var cal = Calendar._C;
 271         if (!cal) {
 272                 return false;
 273         }
 274         var cal = cal;
 275         var cd = cal.activeDiv;
 276         var yc = cal.yearsCombo;
 277         if (cal.hilitedYear) {
 278                 Calendar.removeClass(cal.hilitedYear, "hilite");
 279         }
 280         if (cal.activeYear) {
 281                 Calendar.removeClass(cal.activeYear, "active");
 282         }
 283         cal.activeYear = null;
 284         var Y = cal.date.getFullYear() + (fwd ? 1 : -1);
 285         var yr = yc.firstChild;
 286         var show = false;
 287         for (var i = 12; i > 0; --i) {
 288                 if (Y >= cal.minYear && Y <= cal.maxYear) {
 289                         yr.firstChild.data = Y;
 290                         yr.year = Y;
 291                         yr.style.display = "block";
 292                         show = true;
 293                 } else {
 294                         yr.style.display = "none";
 295                 }
 296                 yr = yr.nextSibling;
 297                 Y += fwd ? 2 : -2;
 298         }
 299         if (show) {
 300                 var s = yc.style;
 301                 s.display = "block";
 302                 if (cd.navtype < 0)
 303                         s.left = cd.offsetLeft + "px";
 304                 else
 305                         s.left = (cd.offsetLeft + cd.offsetWidth - yc.offsetWidth) + "px";
 306                 s.top = (cd.offsetTop + cd.offsetHeight) + "px";
 307         }
 308 };
 309
 310 // event handlers
 311
 312 Calendar.tableMouseUp = function(ev) {
 313         var cal = Calendar._C;
 314         if (!cal) {
 315                 return false;
 316         }
 317         if (cal.timeout) {
 318                 clearTimeout(cal.timeout);
 319         }
 320         var el = cal.activeDiv;
 321         if (!el) {
 322                 return false;
 323         }
 324         var target = Calendar.getTargetElement(ev);
 325         ev || (ev = window.event);
 326         Calendar.removeClass(el, "active");
 327         if (target == el || target.parentNode == el) {
 328                 Calendar.cellClick(el, ev);
 329         }
 330         var mon = Calendar.findMonth(target);
 331         var date = null;
 332         if (mon) {
 333                 date = new Date(cal.date);
 334                 if (mon.month != date.getMonth()) {
 335                         date.setMonth(mon.month);
 336                         cal.setDate(date);
 337                         cal.dateClicked = false;
 338                         cal.callHandler();
 339                 }
 340         } else {
 341                 var year = Calendar.findYear(target);
 342                 if (year) {
 343                         date = new Date(cal.date);
 344                         if (year.year != date.getFullYear()) {
 345                                 date.setFullYear(year.year);
 346                                 cal.setDate(date);
 347                                 cal.dateClicked = false;
 348                                 cal.callHandler();
 349                         }
 350                 }
 351         }
 352         with (Calendar) {
 353                 removeEvent(document, "mouseup", tableMouseUp);
 354                 removeEvent(document, "mouseover", tableMouseOver);
 355                 removeEvent(document, "mousemove", tableMouseOver);
 356                 cal._hideCombos();
 357                 _C = null;
 358                 return stopEvent(ev);
 359         }
 360 };
 361
 362 Calendar.tableMouseOver = function (ev) {
 363         var cal = Calendar._C;
 364         if (!cal) {
 365                 return;
 366         }
 367         var el = cal.activeDiv;
 368         var target = Calendar.getTargetElement(ev);
 369         if (target == el || target.parentNode == el) {
 370                 Calendar.addClass(el, "hilite active");
 371                 Calendar.addClass(el.parentNode, "rowhilite");
 372         } else {
 373                 if (typeof el.navtype == "undefined" || (el.navtype != 50 && (el.navtype == 0 || Math.abs(el.navtype) > 2)))
 374                         Calendar.removeClass(el, "active");
 375                 Calendar.removeClass(el, "hilite");
 376                 Calendar.removeClass(el.parentNode, "rowhilite");
 377         }
 378         ev || (ev = window.event);
 379         if (el.navtype == 50 && target != el) {
 380                 var pos = Calendar.getAbsolutePos(el);
 381                 var w = el.offsetWidth;
 382                 var x = ev.clientX;
 383                 var dx;
 384                 var decrease = true;
 385                 if (x > pos.x + w) {
 386                         dx = x - pos.x - w;
 387                         decrease = false;
 388                 } else
 389                         dx = pos.x - x;
 390
 391                 if (dx < 0) dx = 0;
 392                 var range = el._range;
 393                 var current = el._current;
 394                 var count = Math.floor(dx / 10) % range.length;
 395                 for (var i = range.length; --i >= 0;)
 396                         if (range[i] == current)
 397                                 break;
 398                 while (count-- > 0)
 399                         if (decrease) {
 400                                 if (!(--i in range))
 401                                         i = range.length - 1;
 402                         } else if (!(++i in range))
 403                                 i = 0;
 404                 var newval = range[i];
 405                 el.firstChild.data = newval;
 406
 407                 cal.onUpdateTime();
 408         }
 409         var mon = Calendar.findMonth(target);
 410         if (mon) {
 411                 if (mon.month != cal.date.getMonth()) {
 412                         if (cal.hilitedMonth) {
 413                                 Calendar.removeClass(cal.hilitedMonth, "hilite");
 414                         }
 415                         Calendar.addClass(mon, "hilite");
 416                         cal.hilitedMonth = mon;
 417                 } else if (cal.hilitedMonth) {
 418                         Calendar.removeClass(cal.hilitedMonth, "hilite");
 419                 }
 420         } else {
 421                 if (cal.hilitedMonth) {
 422                         Calendar.removeClass(cal.hilitedMonth, "hilite");
 423                 }
 424                 var year = Calendar.findYear(target);
 425                 if (year) {
 426                         if (year.year != cal.date.getFullYear()) {
 427                                 if (cal.hilitedYear) {
 428                                         Calendar.removeClass(cal.hilitedYear, "hilite");
 429                                 }
 430                                 Calendar.addClass(year, "hilite");
 431                                 cal.hilitedYear = year;
 432                         } else if (cal.hilitedYear) {
 433                                 Calendar.removeClass(cal.hilitedYear, "hilite");
 434                         }
 435                 } else if (cal.hilitedYear) {
 436                         Calendar.removeClass(cal.hilitedYear, "hilite");
 437                 }
 438         }
 439         return Calendar.stopEvent(ev);
 440 };
 441
 442 Calendar.tableMouseDown = function (ev) {
 443         if (Calendar.getTargetElement(ev) == Calendar.getElement(ev)) {
 444                 return Calendar.stopEvent(ev);
 445         }
 446 };
 447
 448 Calendar.calDragIt = function (ev) {
 449         var cal = Calendar._C;
 450         if (!(cal && cal.dragging)) {
 451                 return false;
 452         }
 453         var posX;
 454         var posY;
 455         if (Calendar.is_ie) {
 456                 posY = window.event.clientY + document.body.scrollTop;
 457                 posX = window.event.clientX + document.body.scrollLeft;
 458         } else {
 459                 posX = ev.pageX;
 460                 posY = ev.pageY;
 461         }
 462         cal.hideShowCovered();
 463         var st = cal.element.style;
 464         st.left = (posX - cal.xOffs) + "px";
 465         st.top = (posY - cal.yOffs) + "px";
 466         return Calendar.stopEvent(ev);
 467 };
 468
 469 Calendar.calDragEnd = function (ev) {
 470         var cal = Calendar._C;
 471         if (!cal) {
 472                 return false;
 473         }
 474         cal.dragging = false;
 475         with (Calendar) {
 476                 removeEvent(document, "mousemove", calDragIt);
 477                 removeEvent(document, "mouseover", stopEvent);
 478                 removeEvent(document, "mouseup", calDragEnd);
 479                 tableMouseUp(ev);
 480         }
 481         cal.hideShowCovered();
 482 };
 483
 484 Calendar.dayMouseDown = function(ev) {
 485         var el = Calendar.getElement(ev);
 486         if (el.disabled) {
 487                 return false;
 488         }
 489         var cal = el.calendar;
 490         cal.activeDiv = el;
 491         Calendar._C = cal;
 492         if (el.navtype != 300) with (Calendar) {
 493                 if (el.navtype == 50)
 494                         el._current = el.firstChild.data;
 495                 addClass(el, "hilite active");
 496                 addEvent(document, "mouseover", tableMouseOver);
 497                 addEvent(document, "mousemove", tableMouseOver);
 498                 addEvent(document, "mouseup", tableMouseUp);
 499         } else if (cal.isPopup) {
 500                 cal._dragStart(ev);
 501         }
 502         if (el.navtype == -1 || el.navtype == 1) {
 503                 if (cal.timeout) clearTimeout(cal.timeout);
 504                 cal.timeout = setTimeout("Calendar.showMonthsCombo()", 250);
 505         } else if (el.navtype == -2 || el.navtype == 2) {
 506                 if (cal.timeout) clearTimeout(cal.timeout);
 507                 cal.timeout = setTimeout((el.navtype > 0) ? "Calendar.showYearsCombo(true)" : "Calendar.showYearsCombo(false)", 250);
 508         } else {
 509                 cal.timeout = null;
 510         }
 511         return Calendar.stopEvent(ev);
 512 };
 513
 514 Calendar.dayMouseDblClick = function(ev) {
 515         Calendar.cellClick(Calendar.getElement(ev), ev || window.event);
 516         if (Calendar.is_ie) {
 517                 document.selection.empty();
 518         }
 519 };
 520
 521 Calendar.dayMouseOver = function(ev) {
 522         var el = Calendar.getElement(ev);
 523         if (Calendar.isRelated(el, ev) || Calendar._C || el.disabled) {
 524                 return false;
 525         }
 526         if (el.ttip) {
 527                 if (el.ttip.substr(0, 1) == "_") {
 528                         var date = null;
 529                         with (el.calendar.date) {
 530                                 date = new Date(getFullYear(), getMonth(), el.caldate);
 531                         }
 532                         el.ttip = date.print(el.calendar.ttDateFormat) + el.ttip.substr(1);
 533                 }
 534                 el.calendar.tooltips.firstChild.data = el.ttip;
 535         }
 536         if (el.navtype != 300) {
 537                 Calendar.addClass(el, "hilite");
 538                 if (el.caldate) {
 539                         Calendar.addClass(el.parentNode, "rowhilite");
 540                 }
 541         }
 542         return Calendar.stopEvent(ev);
 543 };
 544
 545 Calendar.dayMouseOut = function(ev) {
 546         with (Calendar) {
 547                 var el = getElement(ev);
 548                 if (isRelated(el, ev) || _C || el.disabled) {
 549                         return false;
 550                 }
 551                 removeClass(el, "hilite");
 552                 if (el.caldate) {
 553                         removeClass(el.parentNode, "rowhilite");
 554                 }
 555                 el.calendar.tooltips.firstChild.data = _TT["SEL_DATE"];
 556                 return stopEvent(ev);
 557         }
 558 };
 559
 560 /**
 561  *  A generic "click" handler :) handles all types of buttons defined in this
 562  *  calendar.
 563  */
 564 Calendar.cellClick = function(el, ev) {
 565         var cal = el.calendar;
 566         var closing = false;
 567         var newdate = false;
 568         var date = null;
 569         if (typeof el.navtype == "undefined") {
 570                 Calendar.removeClass(cal.currentDateEl, "selected");
 571                 Calendar.addClass(el, "selected");
 572                 closing = (cal.currentDateEl == el);
 573                 if (!closing) {
 574                         cal.currentDateEl = el;
 575                 }
 576                 cal.date.setDate(el.caldate);
 577                 date = cal.date;
 578                 newdate = true;
 579                 // a date was clicked
 580                 cal.dateClicked = true;
 581         } else {
 582                 if (el.navtype == 200) {
 583                         Calendar.removeClass(el, "hilite");
 584                         cal.callCloseHandler();
 585                         return;
 586                 }
 587                 date = (el.navtype == 0) ? new Date() : new Date(cal.date);
 588                 // unless "today" was clicked, we assume no date was clicked so
 589                 // the selected handler will know not to close the calenar when
 590                 // in single-click mode.
 591                 // cal.dateClicked = (el.navtype == 0);
 592                 cal.dateClicked = false;
 593                 var year = date.getFullYear();
 594                 var mon = date.getMonth();
 595                 function setMonth(m) {
 596                         var day = date.getDate();
 597                         var max = date.getMonthDays(m);
 598                         if (day > max) {
 599                                 date.setDate(max);
 600                         }
 601                         date.setMonth(m);
 602                 };
 603                 switch (el.navtype) {
 604                     case 400:
 605                         Calendar.removeClass(el, "hilite");
 606                         var text = Calendar._TT["ABOUT"];
 607                         if (typeof text != "undefined") {
 608                                 text += cal.showsTime ? Calendar._TT["ABOUT_TIME"] : "";
 609                         } else {
 610                                 // FIXME: this should be removed as soon as lang files get updated!
 611                                 text = "Help and about box text is not translated into this language.\n" +
 612                                         "If you know this language and you feel generous please update\n" +
 613                                         "the corresponding file in \"lang\" subdir to match calendar-en.js\n" +
 614                                         "and send it back to <mishoo@infoiasi.ro> to get it into the distribution  ;-)\n\n" +
 615                                         "Thank you!\n" +
 616                                         "http://dynarch.com/mishoo/calendar.epl\n";
 617                         }
 618                         alert(text);
 619                         return;
 620                     case -2:
 621                         if (year > cal.minYear) {
 622                                 date.setFullYear(year - 1);
 623                         }
 624                         break;
 625                     case -1:
 626                         if (mon > 0) {
 627                                 setMonth(mon - 1);
 628                         } else if (year-- > cal.minYear) {
 629                                 date.setFullYear(year);
 630                                 setMonth(11);
 631                         }
 632                         break;
 633                     case 1:
 634                         if (mon < 11) {
 635                                 setMonth(mon + 1);
 636                         } else if (year < cal.maxYear) {
 637                                 date.setFullYear(year + 1);
 638                                 setMonth(0);
 639                         }
 640                         break;
 641                     case 2:
 642                         if (year < cal.maxYear) {
 643                                 date.setFullYear(year + 1);
 644                         }
 645                         break;
 646                     case 100:
 647                         cal.setMondayFirst(!cal.mondayFirst);
 648                         return;
 649                     case 50:
 650                         var range = el._range;
 651                         var current = el.firstChild.data;
 652                         for (var i = range.length; --i >= 0;)
 653                                 if (range[i] == current)
 654                                         break;
 655                         if (ev && ev.shiftKey) {
 656                                 if (!(--i in range))
 657                                         i = range.length - 1;
 658                         } else if (!(++i in range))
 659                                 i = 0;
 660                         var newval = range[i];
 661                         el.firstChild.data = newval;
 662                         cal.onUpdateTime();
 663                         return;
 664                     case 0:
 665                         // TODAY will bring us here
 666                         if ((typeof cal.getDateStatus == "function") && cal.getDateStatus(date, date.getFullYear(), date.getMonth(), date.getDate())) {
 667                                 // remember, "date" was previously set to new
 668                                 // Date() if TODAY was clicked; thus, it
 669                                 // contains today date.
 670                                 return false;
 671                         }
 672                         break;
 673                 }
 674                 if (!date.equalsTo(cal.date)) {
 675                         cal.setDate(date);
 676                         newdate = true;
 677                 }
 678         }
 679         if (newdate) {
 680                 cal.callHandler();
 681         }
 682         if (closing) {
 683                 Calendar.removeClass(el, "hilite");
 684                 cal.callCloseHandler();
 685         }
 686 };
 687
 688 // END: CALENDAR STATIC FUNCTIONS
 689
 690 // BEGIN: CALENDAR OBJECT FUNCTIONS
 691
 692 /**
 693  *  This function creates the calendar inside the given parent.  If _par is
 694  *  null than it creates a popup calendar inside the BODY element.  If _par is
 695  *  an element, be it BODY, then it creates a non-popup calendar (still
 696  *  hidden).  Some properties need to be set before calling this function.
 697  */
 698 Calendar.prototype.create = function (_par) {
 699         var parent = null;
 700         if (! _par) {
 701                 // default parent is the document body, in which case we create
 702                 // a popup calendar.
 703                 parent = document.getElementsByTagName("body")[0];
 704                 this.isPopup = true;
 705         } else {
 706                 parent = _par;
 707                 this.isPopup = false;
 708         }
 709         this.date = this.dateStr ? new Date(this.dateStr) : new Date();
 710
 711         var table = Calendar.createElement("table");
 712         this.table = table;
 713         table.cellSpacing = 0;
 714         table.cellPadding = 0;
 715         table.calendar = this;
 716         Calendar.addEvent(table, "mousedown", Calendar.tableMouseDown);
 717
 718         var div = Calendar.createElement("div");
 719         this.element = div;
 720         div.className = "calendar";
 721         if (this.isPopup) {
 722                 div.style.position = "absolute";
 723                 div.style.display = "none";
 724         }
 725         div.appendChild(table);
 726
 727         var thead = Calendar.createElement("thead", table);
 728         var cell = null;
 729         var row = null;
 730
 731         var cal = this;
 732         var hh = function (text, cs, navtype) {
 733                 cell = Calendar.createElement("td", row);
 734                 cell.colSpan = cs;
 735                 cell.className = "button";
 736                 if (navtype != 0 && Math.abs(navtype) <= 2)
 737                         cell.className += " nav";
 738                 Calendar._add_evs(cell);
 739                 cell.calendar = cal;
 740                 cell.navtype = navtype;
 741                 if (text.substr(0, 1) != "&") {
 742                         cell.appendChild(document.createTextNode(text));
 743                 }
 744                 else {
 745                         // FIXME: dirty hack for entities
 746                         cell.innerHTML = text;
 747                 }
 748                 return cell;
 749         };
 750
 751         row = Calendar.createElement("tr", thead);
 752         var title_length = 6;
 753         (this.isPopup) && --title_length;
 754         (this.weekNumbers) && ++title_length;
 755
 756         hh("?", 1, 400).ttip = Calendar._TT["INFO"];
 757         this.title = hh("", title_length, 300);
 758         this.title.className = "title";
 759         if (this.isPopup) {
 760                 this.title.ttip = Calendar._TT["DRAG_TO_MOVE"];
 761                 this.title.style.cursor = "move";
 762                 hh("&#x00d7;", 1, 200).ttip = Calendar._TT["CLOSE"];
 763         }
 764
 765         row = Calendar.createElement("tr", thead);
 766         row.className = "headrow";
 767
 768         this._nav_py = hh("&#x00ab;", 1, -2);
 769         this._nav_py.ttip = Calendar._TT["PREV_YEAR"];
 770
 771         this._nav_pm = hh("&#x2039;", 1, -1);
 772         this._nav_pm.ttip = Calendar._TT["PREV_MONTH"];
 773
 774         this._nav_now = hh(Calendar._TT["TODAY"], this.weekNumbers ? 4 : 3, 0);
 775         this._nav_now.ttip = Calendar._TT["GO_TODAY"];
 776
 777         this._nav_nm = hh("&#x203a;", 1, 1);
 778         this._nav_nm.ttip = Calendar._TT["NEXT_MONTH"];
 779
 780         this._nav_ny = hh("&#x00bb;", 1, 2);
 781         this._nav_ny.ttip = Calendar._TT["NEXT_YEAR"];
 782
 783         // day names
 784         row = Calendar.createElement("tr", thead);
 785         row.className = "daynames";
 786         if (this.weekNumbers) {
 787                 cell = Calendar.createElement("td", row);
 788                 cell.className = "name wn";
 789                 cell.appendChild(document.createTextNode(Calendar._TT["WK"]));
 790         }
 791         for (var i = 7; i > 0; --i) {
 792                 cell = Calendar.createElement("td", row);
 793                 cell.appendChild(document.createTextNode(""));
 794                 if (!i) {
 795                         cell.navtype = 100;
 796                         cell.calendar = this;
 797                         Calendar._add_evs(cell);
 798                 }
 799         }
 800         this.firstdayname = (this.weekNumbers) ? row.firstChild.nextSibling : row.firstChild;
 801         this._displayWeekdays();
 802
 803         var tbody = Calendar.createElement("tbody", table);
 804         this.tbody = tbody;
 805
 806         for (i = 6; i > 0; --i) {
 807                 row = Calendar.createElement("tr", tbody);
 808                 if (this.weekNumbers) {
 809                         cell = Calendar.createElement("td", row);
 810                         cell.appendChild(document.createTextNode(""));
 811                 }
 812                 for (var j = 7; j > 0; --j) {
 813                         cell = Calendar.createElement("td", row);
 814                         cell.appendChild(document.createTextNode(""));
 815                         cell.calendar = this;
 816                         Calendar._add_evs(cell);
 817                 }
 818         }
 819
 820         if (this.showsTime) {
 821                 row = Calendar.createElement("tr", tbody);
 822                 row.className = "time";
 823
 824                 cell = Calendar.createElement("td", row);
 825                 cell.className = "time";
 826                 cell.colSpan = 2;
 827                 cell.innerHTML = "&nbsp;";
 828
 829                 cell = Calendar.createElement("td", row);
 830                 cell.className = "time";
 831                 cell.colSpan = this.weekNumbers ? 4 : 3;
 832
 833                 (function(){
 834                         function makeTimePart(className, init, range_start, range_end) {
 835                                 var part = Calendar.createElement("span", cell);
 836                                 part.className = className;
 837                                 part.appendChild(document.createTextNode(init));
 838                                 part.calendar = cal;
 839                                 part.ttip = Calendar._TT["TIME_PART"];
 840                                 part.navtype = 50;
 841                                 part._range = [];
 842                                 if (typeof range_start != "number")
 843                                         part._range = range_start;
 844                                 else {
 845                                         for (var i = range_start; i <= range_end; ++i) {
 846                                                 var txt;
 847                                                 if (i < 10 && range_end >= 10) txt = '0' + i;
 848                                                 else txt = '' + i;
 849                                                 part._range[part._range.length] = txt;
 850                                         }
 851                                 }
 852                                 Calendar._add_evs(part);
 853                                 return part;
 854                         };
 855                         var hrs = cal.date.getHours();
 856                         var mins = cal.date.getMinutes();
 857                         var t12 = !cal.time24;
 858                         var pm = (hrs > 12);
 859                         if (t12 && pm) hrs -= 12;
 860                         var H = makeTimePart("hour", hrs, t12 ? 1 : 0, t12 ? 12 : 23);
 861                         var span = Calendar.createElement("span", cell);
 862                         span.appendChild(document.createTextNode(":"));
 863                         span.className = "colon";
 864                         var M = makeTimePart("minute", mins, 0, 59);
 865                         var AP = null;
 866                         cell = Calendar.createElement("td", row);
 867                         cell.className = "time";
 868                         cell.colSpan = 2;
 869                         if (t12)
 870                                 AP = makeTimePart("ampm", pm ? "pm" : "am", ["am", "pm"]);
 871                         else
 872                                 cell.innerHTML = "&nbsp;";
 873
 874                         cal.onSetTime = function() {
 875                                 var hrs = this.date.getHours();
 876                                 var mins = this.date.getMinutes();
 877                                 var pm = (hrs > 12);
 878                                 if (pm && t12) hrs -= 12;
 879                                 H.firstChild.data = (hrs < 10) ? ("0" + hrs) : hrs;
 880                                 M.firstChild.data = (mins < 10) ? ("0" + mins) : mins;
 881                                 if (t12)
 882                                         AP.firstChild.data = pm ? "pm" : "am";
 883                         };
 884
 885                         cal.onUpdateTime = function() {
 886                                 var date = this.date;
 887                                 var h = parseInt(H.firstChild.data, 10);
 888                                 if (t12) {
 889                                         if (/pm/i.test(AP.firstChild.data) && h < 12)
 890                                                 h += 12;
 891                                         else if (/am/i.test(AP.firstChild.data) && h == 12)
 892                                                 h = 0;
 893                                 }
 894                                 var d = date.getDate();
 895                                 var m = date.getMonth();
 896                                 var y = date.getFullYear();
 897                                 date.setHours(h);
 898                                 date.setMinutes(parseInt(M.firstChild.data, 10));
 899                                 date.setFullYear(y);
 900                                 date.setMonth(m);
 901                                 date.setDate(d);
 902                                 this.dateClicked = false;
 903                                 this.callHandler();
 904                         };
 905                 })();
 906         } else {
 907                 this.onSetTime = this.onUpdateTime = function() {};
 908         }
 909
 910         var tfoot = Calendar.createElement("tfoot", table);
 911
 912         row = Calendar.createElement("tr", tfoot);
 913         row.className = "footrow";
 914
 915         cell = hh(Calendar._TT["SEL_DATE"], this.weekNumbers ? 8 : 7, 300);
 916         cell.className = "ttip";
 917         if (this.isPopup) {
 918                 cell.ttip = Calendar._TT["DRAG_TO_MOVE"];
 919                 cell.style.cursor = "move";
 920         }
 921         this.tooltips = cell;
 922
 923         div = Calendar.createElement("div", this.element);
 924         this.monthsCombo = div;
 925         div.className = "combo";
 926         for (i = 0; i < Calendar._MN.length; ++i) {
 927                 var mn = Calendar.createElement("div");
 928                 mn.className = Calendar.is_ie ? "label-IEfix" : "label";
 929                 mn.month = i;
 930                 mn.appendChild(document.createTextNode(Calendar._SMN[i]));
 931                 div.appendChild(mn);
 932         }
 933
 934         div = Calendar.createElement("div", this.element);
 935         this.yearsCombo = div;
 936         div.className = "combo";
 937         for (i = 12; i > 0; --i) {
 938                 var yr = Calendar.createElement("div");
 939                 yr.className = Calendar.is_ie ? "label-IEfix" : "label";
 940                 yr.appendChild(document.createTextNode(""));
 941                 div.appendChild(yr);
 942         }
 943
 944         this._init(this.mondayFirst, this.date);
 945         parent.appendChild(this.element);
 946 };
 947
 948 /** keyboard navigation, only for popup calendars */
 949 Calendar._keyEvent = function(ev) {
 950         if (!window.calendar) {
 951                 return false;
 952         }
 953         (Calendar.is_ie) && (ev = window.event);
 954         var cal = window.calendar;
 955         var act = (Calendar.is_ie || ev.type == "keypress");
 956         if (ev.ctrlKey) {
 957                 switch (ev.keyCode) {
 958                     case 37: // KEY left
 959                         act && Calendar.cellClick(cal._nav_pm);
 960                         break;
 961                     case 38: // KEY up
 962                         act && Calendar.cellClick(cal._nav_py);
 963                         break;
 964                     case 39: // KEY right
 965                         act && Calendar.cellClick(cal._nav_nm);
 966                         break;
 967                     case 40: // KEY down
 968                         act && Calendar.cellClick(cal._nav_ny);
 969                         break;
 970                     default:
 971                         return false;
 972                 }
 973         } else switch (ev.keyCode) {
 974             case 32: // KEY space (now)
 975                 Calendar.cellClick(cal._nav_now);
 976                 break;
 977             case 27: // KEY esc
 978                 act && cal.hide();
 979                 break;
 980             case 37: // KEY left
 981             case 38: // KEY up
 982             case 39: // KEY right
 983             case 40: // KEY down
 984                 if (act) {
 985                         var date = cal.date.getDate() - 1;
 986                         var el = cal.currentDateEl;
 987                         var ne = null;
 988                         var prev = (ev.keyCode == 37) || (ev.keyCode == 38);
 989                         switch (ev.keyCode) {
 990                             case 37: // KEY left
 991                                 (--date >= 0) && (ne = cal.ar_days[date]);
 992                                 break;
 993                             case 38: // KEY up
 994                                 date -= 7;
 995                                 (date >= 0) && (ne = cal.ar_days[date]);
 996                                 break;
 997                             case 39: // KEY right
 998                                 (++date < cal.ar_days.length) && (ne = cal.ar_days[date]);
 999                                 break;
1000                             case 40: // KEY down
1001                                 date += 7;
1002                                 (date < cal.ar_days.length) && (ne = cal.ar_days[date]);
1003                                 break;
1004                         }
1005                         if (!ne) {
1006                                 if (prev) {
1007                                         Calendar.cellClick(cal._nav_pm);
1008                                 } else {
1009                                         Calendar.cellClick(cal._nav_nm);
1010                                 }
1011                                 date = (prev) ? cal.date.getMonthDays() : 1;
1012                                 el = cal.currentDateEl;
1013                                 ne = cal.ar_days[date - 1];
1014                         }
1015                         Calendar.removeClass(el, "selected");
1016                         Calendar.addClass(ne, "selected");
1017                         cal.date.setDate(ne.caldate);
1018                         cal.callHandler();
1019                         cal.currentDateEl = ne;
1020                 }
1021                 break;
1022             case 13: // KEY enter
1023                 if (act) {
1024                         cal.callHandler();
1025                         cal.hide();
1026                 }
1027                 break;
1028             default:
1029                 return false;
1030         }
1031         return Calendar.stopEvent(ev);
1032 };
1033
1034 /**
1035  *  (RE)Initializes the calendar to the given date and style (if mondayFirst is
1036  *  true it makes Monday the first day of week, otherwise the weeks start on
1037  *  Sunday.
1038  */
1039 Calendar.prototype._init = function (mondayFirst, date) {
1040         var today = new Date();
1041         var year = date.getFullYear();
1042         if (year < this.minYear) {
1043                 year = this.minYear;
1044                 date.setFullYear(year);
1045         } else if (year > this.maxYear) {
1046                 year = this.maxYear;
1047                 date.setFullYear(year);
1048         }
1049         this.mondayFirst = mondayFirst;
1050         this.date = new Date(date);
1051         var month = date.getMonth();
1052         var mday = date.getDate();
1053         var no_days = date.getMonthDays();
1054         date.setDate(1);
1055         var wday = date.getDay();
1056         var MON = mondayFirst ? 1 : 0;
1057         var SAT = mondayFirst ? 5 : 6;
1058         var SUN = mondayFirst ? 6 : 0;
1059         if (mondayFirst) {
1060                 wday = (wday > 0) ? (wday - 1) : 6;
1061         }
1062         var iday = 1;
1063         var row = this.tbody.firstChild;
1064         var MN = Calendar._SMN[month];
1065         var hasToday = ((today.getFullYear() == year) && (today.getMonth() == month));
1066         var todayDate = today.getDate();
1067         var week_number = date.getWeekNumber();
1068         var ar_days = new Array();
1069         for (var i = 0; i < 6; ++i) {
1070                 if (iday > no_days) {
1071                         row.className = "emptyrow";
1072                         row = row.nextSibling;
1073                         continue;
1074                 }
1075                 var cell = row.firstChild;
1076                 if (this.weekNumbers) {
1077                         cell.className = "day wn";
1078                         cell.firstChild.data = week_number;
1079                         cell = cell.nextSibling;
1080                 }
1081                 ++week_number;
1082                 row.className = "daysrow";
1083                 for (var j = 0; j < 7; ++j) {
1084                         cell.className = "day";
1085                         if ((!i && j < wday) || iday > no_days) {
1086                                 // cell.className = "emptycell";
1087                                 cell.innerHTML = "&nbsp;";
1088                                 cell.disabled = true;
1089                                 cell = cell.nextSibling;
1090                                 continue;
1091                         }
1092                         cell.disabled = false;
1093                         cell.firstChild.data = iday;
1094                         if (typeof this.getDateStatus == "function") {
1095                                 date.setDate(iday);
1096                                 var status = this.getDateStatus(date, year, month, iday);
1097                                 if (status === true) {
1098                                         cell.className += " disabled";
1099                                         cell.disabled = true;
1100                                 } else {
1101                                         if (/disabled/i.test(status))
1102                                                 cell.disabled = true;
1103                                         cell.className += " " + status;
1104                                 }
1105                         }
1106                         if (!cell.disabled) {
1107                                 ar_days[ar_days.length] = cell;
1108                                 cell.caldate = iday;
1109                                 cell.ttip = "_";
1110                                 if (iday == mday) {
1111                                         cell.className += " selected";
1112                                         this.currentDateEl = cell;
1113                                 }
1114                                 if (hasToday && (iday == todayDate)) {
1115                                         cell.className += " today";
1116                                         cell.ttip += Calendar._TT["PART_TODAY"];
1117                                 }
1118                                 if (wday == SAT || wday == SUN) {
1119                                         cell.className += " weekend";
1120                                 }
1121                         }
1122                         ++iday;
1123                         ((++wday) ^ 7) || (wday = 0);
1124                         cell = cell.nextSibling;
1125                 }
1126                 row = row.nextSibling;
1127         }
1128         this.ar_days = ar_days;
1129         this.title.firstChild.data = Calendar._MN[month] + ", " + year;
1130         this.onSetTime();
1131         // PROFILE
1132         // this.tooltips.firstChild.data = "Generated in " + ((new Date()) - today) + " ms";
1133 };
1134
1135 /**
1136  *  Calls _init function above for going to a certain date (but only if the
1137  *  date is different than the currently selected one).
1138  */
1139 Calendar.prototype.setDate = function (date) {
1140         if (!date.equalsTo(this.date)) {
1141                 this._init(this.mondayFirst, date);
1142         }
1143 };
1144
1145 /**
1146  *  Refreshes the calendar.  Useful if the "disabledHandler" function is
1147  *  dynamic, meaning that the list of disabled date can change at runtime.
1148  *  Just * call this function if you think that the list of disabled dates
1149  *  should * change.
1150  */
1151 Calendar.prototype.refresh = function () {
1152         this._init(this.mondayFirst, this.date);
1153 };
1154
1155 /** Modifies the "mondayFirst" parameter (EU/US style). */
1156 Calendar.prototype.setMondayFirst = function (mondayFirst) {
1157         this._init(mondayFirst, this.date);
1158         this._displayWeekdays();
1159 };
1160
1161 /**
1162  *  Allows customization of what dates are enabled.  The "unaryFunction"
1163  *  parameter must be a function object that receives the date (as a JS Date
1164  *  object) and returns a boolean value.  If the returned value is true then
1165  *  the passed date will be marked as disabled.
1166  */
1167 Calendar.prototype.setDateStatusHandler = Calendar.prototype.setDisabledHandler = function (unaryFunction) {
1168         this.getDateStatus = unaryFunction;
1169 };
1170
1171 /** Customization of allowed year range for the calendar. */
1172 Calendar.prototype.setRange = function (a, z) {
1173         this.minYear = a;
1174         this.maxYear = z;
1175 };
1176
1177 /** Calls the first user handler (selectedHandler). */
1178 Calendar.prototype.callHandler = function () {
1179         if (this.onSelected) {
1180                 this.onSelected(this, this.date.print(this.dateFormat));
1181         }
1182 };
1183
1184 /** Calls the second user handler (closeHandler). */
1185 Calendar.prototype.callCloseHandler = function () {
1186         if (this.onClose) {
1187                 this.onClose(this);
1188         }
1189         this.hideShowCovered();
1190 };
1191
1192 /** Removes the calendar object from the DOM tree and destroys it. */
1193 Calendar.prototype.destroy = function () {
1194         var el = this.element.parentNode;
1195         el.removeChild(this.element);
1196         Calendar._C = null;
1197         window.calendar = null;
1198 };
1199
1200 /**
1201  *  Moves the calendar element to a different section in the DOM tree (changes
1202  *  its parent).
1203  */
1204 Calendar.prototype.reparent = function (new_parent) {
1205         var el = this.element;
1206         el.parentNode.removeChild(el);
1207         new_parent.appendChild(el);
1208 };
1209
1210 // This gets called when the user presses a mouse button anywhere in the
1211 // document, if the calendar is shown.  If the click was outside the open
1212 // calendar this function closes it.
1213 Calendar._checkCalendar = function(ev) {
1214         if (!window.calendar) {
1215                 return false;
1216         }
1217         var el = Calendar.is_ie ? Calendar.getElement(ev) : Calendar.getTargetElement(ev);
1218         for (; el != null && el != calendar.element; el = el.parentNode);
1219         if (el == null) {
1220                 // calls closeHandler which should hide the calendar.
1221                 window.calendar.callCloseHandler();
1222                 return Calendar.stopEvent(ev);
1223         }
1224 };
1225
1226 /** Shows the calendar. */
1227 Calendar.prototype.show = function () {
1228         var rows = this.table.getElementsByTagName("tr");
1229         for (var i = rows.length; i > 0;) {
1230                 var row = rows[--i];
1231                 Calendar.removeClass(row, "rowhilite");
1232                 var cells = row.getElementsByTagName("td");
1233                 for (var j = cells.length; j > 0;) {
1234                         var cell = cells[--j];
1235                         Calendar.removeClass(cell, "hilite");
1236                         Calendar.removeClass(cell, "active");
1237                 }
1238         }
1239         this.element.style.display = "block";
1240         this.hidden = false;
1241         if (this.isPopup) {
1242                 window.calendar = this;
1243                 Calendar.addEvent(document, "keydown", Calendar._keyEvent);
1244                 Calendar.addEvent(document, "keypress", Calendar._keyEvent);
1245                 Calendar.addEvent(document, "mousedown", Calendar._checkCalendar);
1246         }
1247         this.hideShowCovered();
1248 };
1249
1250 /**
1251  *  Hides the calendar.  Also removes any "hilite" from the class of any TD
1252  *  element.
1253  */
1254 Calendar.prototype.hide = function () {
1255         if (this.isPopup) {
1256                 Calendar.removeEvent(document, "keydown", Calendar._keyEvent);
1257                 Calendar.removeEvent(document, "keypress", Calendar._keyEvent);
1258                 Calendar.removeEvent(document, "mousedown", Calendar._checkCalendar);
1259         }
1260         this.element.style.display = "none";
1261         this.hidden = true;
1262         this.hideShowCovered();
1263 };
1264
1265 /**
1266  *  Shows the calendar at a given absolute position (beware that, depending on
1267  *  the calendar element style -- position property -- this might be relative
1268  *  to the parent's containing rectangle).
1269  */
1270 Calendar.prototype.showAt = function (x, y) {
1271         var s = this.element.style;
1272         s.left = x + "px";
1273         s.top = y + "px";
1274         this.show();
1275 };
1276
1277 /** Shows the calendar near a given element. */
1278 Calendar.prototype.showAtElement = function (el, opts) {
1279         var self = this;
1280         var p = Calendar.getAbsolutePos(el);
1281         if (!opts || typeof opts != "string") {
1282                 this.showAt(p.x, p.y + el.offsetHeight);
1283                 return true;
1284         }
1285         this.element.style.display = "block";
1286         Calendar.continuation_for_the_fucking_khtml_browser = function() {
1287                 var w = self.element.offsetWidth;
1288                 var h = self.element.offsetHeight;
1289                 self.element.style.display = "none";
1290                 var valign = opts.substr(0, 1);
1291                 var halign = "l";
1292                 if (opts.length > 1) {
1293                         halign = opts.substr(1, 1);
1294                 }
1295                 // vertical alignment
1296                 switch (valign) {
1297                     case "T": p.y -= h; break;
1298                     case "B": p.y += el.offsetHeight; break;
1299                     case "C": p.y += (el.offsetHeight - h) / 2; break;
1300                     case "t": p.y += el.offsetHeight - h; break;
1301                     case "b": break; // already there
1302                 }
1303                 // horizontal alignment
1304                 switch (halign) {
1305                     case "L": p.x -= w; break;
1306                     case "R": p.x += el.offsetWidth; break;
1307                     case "C": p.x += (el.offsetWidth - w) / 2; break;
1308                     case "r": p.x += el.offsetWidth - w; break;
1309                     case "l": break; // already there
1310                 }
1311                 self.showAt(p.x, p.y);
1312         };
1313         if (Calendar.is_khtml)
1314                 setTimeout("Calendar.continuation_for_the_fucking_khtml_browser()", 10);
1315         else
1316                 Calendar.continuation_for_the_fucking_khtml_browser();
1317 };
1318
1319 /** Customizes the date format. */
1320 Calendar.prototype.setDateFormat = function (str) {
1321         this.dateFormat = str;
1322 };
1323
1324 /** Customizes the tooltip date format. */
1325 Calendar.prototype.setTtDateFormat = function (str) {
1326         this.ttDateFormat = str;
1327 };
1328
1329 /**
1330  *  Tries to identify the date represented in a string.  If successful it also
1331  *  calls this.setDate which moves the calendar to the given date.
1332  */
1333 Calendar.prototype.parseDate = function (str, fmt) {
1334         var y = 0;
1335         var m = -1;
1336         var d = 0;
1337         var a = str.split(/\W+/);
1338         if (!fmt) {
1339                 fmt = this.dateFormat;
1340         }
1341         var b = [];
1342         fmt.replace(/(%.)/g, function(str, par) {
1343                 return b[b.length] = par;
1344         });
1345         var i = 0, j = 0;
1346         var hr = 0;
1347         var min = 0;
1348         for (i = 0; i < a.length; ++i) {
1349                 if (b[i] == "%a" || b[i] == "%A") {
1350                         continue;
1351                 }
1352                 if (b[i] == "%d" || b[i] == "%e") {
1353                         d = parseInt(a[i], 10);
1354                 }
1355                 if (b[i] == "%m") {
1356                         m = parseInt(a[i], 10) - 1;
1357                 }
1358                 if (b[i] == "%Y" || b[i] == "%y") {
1359                         y = parseInt(a[i], 10);
1360                         (y < 100) && (y += (y > 29) ? 1900 : 2000);
1361                 }
1362                 if (b[i] == "%b" || b[i] == "%B") {
1363                         for (j = 0; j < 12; ++j) {
1364                                 if (Calendar._MN[j].substr(0, a[i].length).toLowerCase() == a[i].toLowerCase()) { m = j; break; }
1365                         }
1366                 } else if (/%[HIkl]/.test(b[i])) {
1367                         hr = parseInt(a[i], 10);
1368                 } else if (/%[pP]/.test(b[i])) {
1369                         if (/pm/i.test(a[i]) && hr < 12)
1370                                 hr += 12;
1371                 } else if (b[i] == "%M") {
1372                         min = parseInt(a[i], 10);
1373                 }
1374         }
1375         if (y != 0 && m != -1 && d != 0) {
1376                 this.setDate(new Date(y, m, d, hr, min, 0));
1377                 return;
1378         }
1379         y = 0; m = -1; d = 0;
1380         for (i = 0; i < a.length; ++i) {
1381                 if (a[i].search(/[a-zA-Z]+/) != -1) {
1382                         var t = -1;
1383                         for (j = 0; j < 12; ++j) {
1384                                 if (Calendar._MN[j].substr(0, a[i].length).toLowerCase() == a[i].toLowerCase()) { t = j; break; }
1385                         }
1386                         if (t != -1) {
1387                                 if (m != -1) {
1388                                         d = m+1;
1389                                 }
1390                                 m = t;
1391                         }
1392                 } else if (parseInt(a[i], 10) <= 12 && m == -1) {
1393                         m = a[i]-1;
1394                 } else if (parseInt(a[i], 10) > 31 && y == 0) {
1395                         y = parseInt(a[i], 10);
1396                         (y < 100) && (y += (y > 29) ? 1900 : 2000);
1397                 } else if (d == 0) {
1398                         d = a[i];
1399                 }
1400         }
1401         if (y == 0) {
1402                 var today = new Date();
1403                 y = today.getFullYear();
1404         }
1405         if (m != -1 && d != 0) {
1406                 this.setDate(new Date(y, m, d, hr, min, 0));
1407         }
1408 };
1409
1410 Calendar.prototype.hideShowCovered = function () {
1411         var self = this;
1412         Calendar.continuation_for_the_fucking_khtml_browser = function() {
1413                 function getVisib(obj){
1414                         var value = obj.style.visibility;
1415                         if (!value) {
1416                                 if (document.defaultView && typeof (document.defaultView.getComputedStyle) == "function") { // Gecko, W3C
1417                                         if (!Calendar.is_khtml)
1418                                                 value = document.defaultView.
1419                                                         getComputedStyle(obj, "").getPropertyValue("visibility");
1420                                         else
1421                                                 value = '';
1422                                 } else if (obj.currentStyle) { // IE
1423                                         value = obj.currentStyle.visibility;
1424                                 } else
1425                                         value = '';
1426                         }
1427                         return value;
1428                 };
1429
1430                 var tags = new Array("applet", "iframe", "select");
1431                 var el = self.element;
1432
1433                 var p = Calendar.getAbsolutePos(el);
1434                 var EX1 = p.x;
1435                 var EX2 = el.offsetWidth + EX1;
1436                 var EY1 = p.y;
1437                 var EY2 = el.offsetHeight + EY1;
1438
1439                 for (var k = tags.length; k > 0; ) {
1440                         var ar = document.getElementsByTagName(tags[--k]);
1441                         var cc = null;
1442
1443                         for (var i = ar.length; i > 0;) {
1444                                 cc = ar[--i];
1445
1446                                 p = Calendar.getAbsolutePos(cc);
1447                                 var CX1 = p.x;
1448                                 var CX2 = cc.offsetWidth + CX1;
1449                                 var CY1 = p.y;
1450                                 var CY2 = cc.offsetHeight + CY1;
1451
1452                                 if (self.hidden || (CX1 > EX2) || (CX2 < EX1) || (CY1 > EY2) || (CY2 < EY1)) {
1453                                         if (!cc.__msh_save_visibility) {
1454                                                 cc.__msh_save_visibility = getVisib(cc);
1455                                         }
1456                                         cc.style.visibility = cc.__msh_save_visibility;
1457                                 } else {
1458                                         if (!cc.__msh_save_visibility) {
1459                                                 cc.__msh_save_visibility = getVisib(cc);
1460                                         }
1461                                         cc.style.visibility = "hidden";
1462                                 }
1463                         }
1464                 }
1465         };
1466         if (Calendar.is_khtml)
1467                 setTimeout("Calendar.continuation_for_the_fucking_khtml_browser()", 10);
1468         else
1469                 Calendar.continuation_for_the_fucking_khtml_browser();
1470 };
1471
1472 /** Internal function; it displays the bar with the names of the weekday. */
1473 Calendar.prototype._displayWeekdays = function () {
1474         var MON = this.mondayFirst ? 0 : 1;
1475         var SUN = this.mondayFirst ? 6 : 0;
1476         var SAT = this.mondayFirst ? 5 : 6;
1477         var cell = this.firstdayname;
1478         for (var i = 0; i < 7; ++i) {
1479                 cell.className = "day name";
1480                 if (!i) {
1481                         cell.ttip = this.mondayFirst ? Calendar._TT["SUN_FIRST"] : Calendar._TT["MON_FIRST"];
1482                         cell.navtype = 100;
1483                         cell.calendar = this;
1484                         Calendar._add_evs(cell);
1485                 }
1486                 if (i == SUN || i == SAT) {
1487                         Calendar.addClass(cell, "weekend");
1488                 }
1489                 cell.firstChild.data = Calendar._SDN[i + 1 - MON];
1490                 cell = cell.nextSibling;
1491         }
1492 };
1493
1494 /** Internal function.  Hides all combo boxes that might be displayed. */
1495 Calendar.prototype._hideCombos = function () {
1496         this.monthsCombo.style.display = "none";
1497         this.yearsCombo.style.display = "none";
1498 };
1499
1500 /** Internal function.  Starts dragging the element. */
1501 Calendar.prototype._dragStart = function (ev) {
1502         if (this.dragging) {
1503                 return;
1504         }
1505         this.dragging = true;
1506         var posX;
1507         var posY;
1508         if (Calendar.is_ie) {
1509                 posY = window.event.clientY + document.body.scrollTop;
1510                 posX = window.event.clientX + document.body.scrollLeft;
1511         } else {
1512                 posY = ev.clientY + window.scrollY;
1513                 posX = ev.clientX + window.scrollX;
1514         }
1515         var st = this.element.style;
1516         this.xOffs = posX - parseInt(st.left);
1517         this.yOffs = posY - parseInt(st.top);
1518         with (Calendar) {
1519                 addEvent(document, "mousemove", calDragIt);
1520                 addEvent(document, "mouseover", stopEvent);
1521                 addEvent(document, "mouseup", calDragEnd);
1522         }
1523 };
1524
1525 // BEGIN: DATE OBJECT PATCHES
1526
1527 /** Adds the number of days array to the Date object. */
1528 Date._MD = new Array(31,28,31,30,31,30,31,31,30,31,30,31);
1529
1530 /** Constants used for time computations */
1531 Date.SECOND = 1000 /* milliseconds */;
1532 Date.MINUTE = 60 * Date.SECOND;
1533 Date.HOUR   = 60 * Date.MINUTE;
1534 Date.DAY    = 24 * Date.HOUR;
1535 Date.WEEK   =  7 * Date.DAY;
1536
1537 /** Returns the number of days in the current month */
1538 Date.prototype.getMonthDays = function(month) {
1539         var year = this.getFullYear();
1540         if (typeof month == "undefined") {
1541                 month = this.getMonth();
1542         }
1543         if (((0 == (year%4)) && ( (0 != (year%100)) || (0 == (year%400)))) && month == 1) {
1544                 return 29;
1545         } else {
1546                 return Date._MD[month];
1547         }
1548 };
1549
1550 /** Returns the number of day in the year. */
1551 Date.prototype.getDayOfYear = function() {
1552         var now = new Date(this.getFullYear(), this.getMonth(), this.getDate(), 0, 0, 0);
1553         var then = new Date(this.getFullYear(), 0, 1, 0, 0, 0);
1554         var time = now - then;
1555         return Math.floor(time / Date.DAY);
1556 };
1557
1558 /** Returns the number of the week in year, as defined in ISO 8601. */
1559 Date.prototype.getWeekNumber = function() {
1560         var now = new Date(this.getFullYear(), this.getMonth(), this.getDate(), 0, 0, 0);
1561         var then = new Date(this.getFullYear(), 0, 1, 0, 0, 0);
1562         var time = now - then;
1563         var day = then.getDay(); // 0 means Sunday
1564         if (day == 0) day = 7;
1565         (day > 4) && (day -= 4) || (day += 3);
1566         return Math.round(((time / Date.DAY) + day) / 7);
1567 };
1568
1569 /** Checks dates equality (ignores time) */
1570 Date.prototype.equalsTo = function(date) {
1571         return ((this.getFullYear() == date.getFullYear()) &&
1572                 (this.getMonth() == date.getMonth()) &&
1573                 (this.getDate() == date.getDate()) &&
1574                 (this.getHours() == date.getHours()) &&
1575                 (this.getMinutes() == date.getMinutes()));
1576 };
1577
1578 /** Prints the date in a string according to the given format. */
1579 Date.prototype.print = function (str) {
1580         var m = this.getMonth();
1581         var d = this.getDate();
1582         var y = this.getFullYear();
1583         var wn = this.getWeekNumber();
1584         var w = this.getDay();
1585         var s = {};
1586         var hr = this.getHours();
1587         var pm = (hr >= 12);
1588         var ir = (pm) ? (hr - 12) : hr;
1589         var dy = this.getDayOfYear();
1590         if (ir == 0)
1591                 ir = 12;
1592         var min = this.getMinutes();
1593         var sec = this.getSeconds();
1594         s["%a"] = Calendar._SDN[w]; // abbreviated weekday name [FIXME: I18N]
1595         s["%A"] = Calendar._DN[w]; // full weekday name
1596         s["%b"] = Calendar._SMN[m]; // abbreviated month name [FIXME: I18N]
1597         s["%B"] = Calendar._MN[m]; // full month name
1598         // FIXME: %c : preferred date and time representation for the current locale
1599         s["%C"] = 1 + Math.floor(y / 100); // the century number
1600         s["%d"] = (d < 10) ? ("0" + d) : d; // the day of the month (range 01 to 31)
1601         s["%e"] = d; // the day of the month (range 1 to 31)
1602         // FIXME: %D : american date style: %m/%d/%y
1603         // FIXME: %E, %F, %G, %g, %h (man strftime)
1604         s["%H"] = (hr < 10) ? ("0" + hr) : hr; // hour, range 00 to 23 (24h format)
1605         s["%I"] = (ir < 10) ? ("0" + ir) : ir; // hour, range 01 to 12 (12h format)
1606         s["%j"] = (dy < 100) ? ((dy < 10) ? ("00" + dy) : ("0" + dy)) : dy; // day of the year (range 001 to 366)
1607         s["%k"] = hr;           // hour, range 0 to 23 (24h format)
1608         s["%l"] = ir;           // hour, range 1 to 12 (12h format)
1609         s["%m"] = (m < 9) ? ("0" + (1+m)) : (1+m); // month, range 01 to 12
1610         s["%M"] = (min < 10) ? ("0" + min) : min; // minute, range 00 to 59
1611         s["%n"] = "\n";         // a newline character
1612         s["%p"] = pm ? "PM" : "AM";
1613         s["%P"] = pm ? "pm" : "am";
1614         // FIXME: %r : the time in am/pm notation %I:%M:%S %p
1615         // FIXME: %R : the time in 24-hour notation %H:%M
1616         s["%s"] = Math.floor(this.getTime() / 1000);
1617         s["%S"] = (sec < 10) ? ("0" + sec) : sec; // seconds, range 00 to 59
1618         s["%t"] = "\t";         // a tab character
1619         // FIXME: %T : the time in 24-hour notation (%H:%M:%S)
1620         s["%U"] = s["%W"] = s["%V"] = (wn < 10) ? ("0" + wn) : wn;
1621         s["%u"] = w + 1;        // the day of the week (range 1 to 7, 1 = MON)
1622         s["%w"] = w;            // the day of the week (range 0 to 6, 0 = SUN)
1623         // FIXME: %x : preferred date representation for the current locale without the time
1624         // FIXME: %X : preferred time representation for the current locale without the date
1625         s["%y"] = ('' + y).substr(2, 2); // year without the century (range 00 to 99)
1626         s["%Y"] = y;            // year with the century
1627         s["%%"] = "%";          // a literal '%' character
1628         var re = Date._msh_formatRegexp;
1629         if (typeof re == "undefined") {
1630                 var tmp = "";
1631                 for (var i in s)
1632                         tmp += tmp ? ("|" + i) : i;
1633                 Date._msh_formatRegexp = re = new RegExp("(" + tmp + ")", 'g');
1634         }
1635         return str.replace(re, function(match, par) { return s[par]; });
1636 };
1637
1638 // END: DATE OBJECT PATCHES
1639
1640 // global object that remembers the calendar
1641 window.calendar = null;