calendar.js

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1/*  Copyright Mihai Bazon, 2002-2005  |  www.bazon.net/mishoo
2 * -----------------------------------------------------------
3 *
4 * The DHTML Calendar, version 1.0 "It is happening again"
5 *
6 * Details and latest version at:
7 * www.dynarch.com/projects/calendar
8 *
9 * This script is developed by Dynarch.com.  Visit us at www.dynarch.com.
10 *
11 * This script is distributed under the GNU Lesser General Public License.
12 * Read the entire license text here: http://www.gnu.org/licenses/lgpl.html
13 */
14
15// $Id: calendar.js,v 1.51 2005/03/07 16:44:31 mishoo Exp $
16
17/** The Calendar object constructor. */
18Calendar = function (firstDayOfWeek, dateStr, onSelected, onClose) {
19	// member variables
20	this.activeDiv = null;
21	this.currentDateEl = null;
22	this.getDateStatus = null;
23	this.getDateToolTip = null;
24	this.getDateText = null;
25	this.timeout = null;
26	this.onSelected = onSelected || null;
27	this.onClose = onClose || null;
28	this.dragging = false;
29	this.hidden = false;
30	this.minYear = 1970;
31	this.maxYear = 2050;
32	this.dateFormat = Calendar._TT["DEF_DATE_FORMAT"];
33	this.ttDateFormat = Calendar._TT["TT_DATE_FORMAT"];
34	this.isPopup = true;
35	this.weekNumbers = true;
36	this.firstDayOfWeek = typeof firstDayOfWeek == "number" ? firstDayOfWeek : Calendar._FD; // 0 for Sunday, 1 for Monday, etc.
37	this.showsOtherMonths = false;
38	this.dateStr = dateStr;
39	this.ar_days = null;
40	this.showsTime = false;
41	this.time24 = true;
42	this.yearStep = 2;
43	this.hiliteToday = true;
44	this.multiple = null;
45	// HTML elements
46	this.table = null;
47	this.element = null;
48	this.tbody = null;
49	this.firstdayname = null;
50	// Combo boxes
51	this.monthsCombo = null;
52	this.yearsCombo = null;
53	this.hilitedMonth = null;
54	this.activeMonth = null;
55	this.hilitedYear = null;
56	this.activeYear = null;
57	// Information
58	this.dateClicked = false;
59
60	// one-time initializations
61	if (typeof Calendar._SDN == "undefined") {
62		// table of short day names
63		if (typeof Calendar._SDN_len == "undefined")
64			Calendar._SDN_len = 3;
65		var ar = new Array();
66		for (var i = 8; i > 0;) {
67			ar[--i] = Calendar._DN[i].substr(0, Calendar._SDN_len);
68		}
69		Calendar._SDN = ar;
70		// table of short month names
71		if (typeof Calendar._SMN_len == "undefined")
72			Calendar._SMN_len = 3;
73		ar = new Array();
74		for (var i = 12; i > 0;) {
75			ar[--i] = Calendar._MN[i].substr(0, Calendar._SMN_len);
76		}
77		Calendar._SMN = ar;
78	}
79};
80
81// ** constants
82
83/// "static", needed for event handlers.
84Calendar._C = null;
85
86/// detect a special case of "web browser"
87Calendar.is_ie = ( /msie/i.test(navigator.userAgent) &&
88		   !/opera/i.test(navigator.userAgent) );
89
90Calendar.is_ie5 = ( Calendar.is_ie && /msie 5\.0/i.test(navigator.userAgent) );
91
92/// detect Opera browser
93Calendar.is_opera = /opera/i.test(navigator.userAgent);
94
95/// detect KHTML-based browsers
96Calendar.is_khtml = /Konqueror|Safari|KHTML/i.test(navigator.userAgent);
97
98// BEGIN: UTILITY FUNCTIONS; beware that these might be moved into a separate
99//        library, at some point.
100
101Calendar.getAbsolutePos = function(el) {
102	var SL = 0, ST = 0;
103	var is_div = /^div$/i.test(el.tagName);
104	if (is_div && el.scrollLeft)
105		SL = el.scrollLeft;
106	if (is_div && el.scrollTop)
107		ST = el.scrollTop;
108	var r = { x: el.offsetLeft - SL, y: el.offsetTop - ST };
109	if (el.offsetParent) {
110		var tmp = this.getAbsolutePos(el.offsetParent);
111		r.x += tmp.x;
112		r.y += tmp.y;
113	}
114	return r;
115};
116
117Calendar.isRelated = function (el, evt) {
118	var related = evt.relatedTarget;
119	if (!related) {
120		var type = evt.type;
121		if (type == "mouseover") {
122			related = evt.fromElement;
123		} else if (type == "mouseout") {
124			related = evt.toElement;
125		}
126	}
127	while (related) {
128		if (related == el) {
129			return true;
130		}
131		related = related.parentNode;
132	}
133	return false;
134};
135
136Calendar.removeClass = function(el, className) {
137	if (!(el && el.className)) {
138		return;
139	}
140	var cls = el.className.split(" ");
141	var ar = new Array();
142	for (var i = cls.length; i > 0;) {
143		if (cls[--i] != className) {
144			ar[ar.length] = cls[i];
145		}
146	}
147	el.className = ar.join(" ");
148};
149
150Calendar.addClass = function(el, className) {
151	Calendar.removeClass(el, className);
152	el.className += " " + className;
153};
154
155// FIXME: the following 2 functions totally suck, are useless and should be replaced immediately.
156Calendar.getElement = function(ev) {
157	var f = Calendar.is_ie ? window.event.srcElement : ev.currentTarget;
158	while (f.nodeType != 1 || /^div$/i.test(f.tagName))
159		f = f.parentNode;
160	return f;
161};
162
163Calendar.getTargetElement = function(ev) {
164	var f = Calendar.is_ie ? window.event.srcElement : ev.target;
165	while (f.nodeType != 1)
166		f = f.parentNode;
167	return f;
168};
169
170Calendar.stopEvent = function(ev) {
171	ev || (ev = window.event);
172	if (Calendar.is_ie) {
173		ev.cancelBubble = true;
174		ev.returnValue = false;

175	} else {
176		ev.preventDefault();
177		ev.stopPropagation();
178	}
179	return false;
180};
181
182Calendar.addEvent = function(el, evname, func) {
183	if (el.attachEvent) { // IE
184		el.attachEvent("on" + evname, func);
185	} else if (el.addEventListener) { // Gecko / W3C
186		el.addEventListener(evname, func, true);
187	} else {
188		el["on" + evname] = func;
189	}
190};
191
192Calendar.removeEvent = function(el, evname, func) {
193	if (el.detachEvent) { // IE
194		el.detachEvent("on" + evname, func);
195	} else if (el.removeEventListener) { // Gecko / W3C
196		el.removeEventListener(evname, func, true);
197	} else {
198		el["on" + evname] = null;
199	}
200};
201
202Calendar.createElement = function(type, parent) {
203	var el = null;
204	if (document.createElementNS) {
205		// use the XHTML namespace; IE won't normally get here unless
206		// _they_ "fix" the DOM2 implementation.
207		el = document.createElementNS("http://www.w3.org/1999/xhtml", type);
208	} else {
209		el = document.createElement(type);
210	}
211	if (typeof parent != "undefined") {
212		parent.appendChild(el);
213	}
214	return el;
215};
216
217// END: UTILITY FUNCTIONS
218
219// BEGIN: CALENDAR STATIC FUNCTIONS
220
221/** Internal -- adds a set of events to make some element behave like a button. */
222Calendar._add_evs = function(el) {
223	with (Calendar) {
224		addEvent(el, "mouseover", dayMouseOver);
225		addEvent(el, "mousedown", dayMouseDown);
226		addEvent(el, "mouseout", dayMouseOut);
227		if (is_ie) {
228			addEvent(el, "dblclick", dayMouseDblClick);
229			el.setAttribute("unselectable", true);
230		}
231	}
232};
233
234Calendar.findMonth = function(el) {
235	if (typeof el.month != "undefined") {
236		return el;
237	} else if (typeof el.parentNode.month != "undefined") {
238		return el.parentNode;
239	}
240	return null;
241};
242
243Calendar.findYear = function(el) {
244	if (typeof el.year != "undefined") {
245		return el;
246	} else if (typeof el.parentNode.year != "undefined") {
247		return el.parentNode;
248	}
249	return null;
250};
251
252Calendar.showMonthsCombo = function () {
253	var cal = Calendar._C;
254	if (!cal) {
255		return false;
256	}
257	var cal = cal;
258	var cd = cal.activeDiv;
259	var mc = cal.monthsCombo;
260	if (cal.hilitedMonth) {
261		Calendar.removeClass(cal.hilitedMonth, "hilite");
262	}
263	if (cal.activeMonth) {
264		Calendar.removeClass(cal.activeMonth, "active");
265	}
266	var mon = cal.monthsCombo.getElementsByTagName("div")[cal.date.getMonth()];
267	Calendar.addClass(mon, "active");
268	cal.activeMonth = mon;
269	var s = mc.style;
270	s.display = "block";
271	if (cd.navtype < 0)
272		s.left = cd.offsetLeft + "px";
273	else {
274		var mcw = mc.offsetWidth;
275		if (typeof mcw == "undefined")
276			// Konqueror brain-dead techniques
277			mcw = 50;
278		s.left = (cd.offsetLeft + cd.offsetWidth - mcw) + "px";
279	}
280	s.top = (cd.offsetTop + cd.offsetHeight) + "px";
281};
282
283Calendar.showYearsCombo = function (fwd) {
284	var cal = Calendar._C;
285	if (!cal) {
286		return false;
287	}
288	var cal = cal;
289	var cd = cal.activeDiv;
290	var yc = cal.yearsCombo;
291	if (cal.hilitedYear) {
292		Calendar.removeClass(cal.hilitedYear, "hilite");
293	}
294	if (cal.activeYear) {
295		Calendar.removeClass(cal.activeYear, "active");
296	}
297	cal.activeYear = null;
298	var Y = cal.date.getFullYear() + (fwd ? 1 : -1);
299	var yr = yc.firstChild;
300	var show = false;
301	for (var i = 12; i > 0; --i) {
302		if (Y >= cal.minYear && Y <= cal.maxYear) {
303			yr.innerHTML = Y;
304			yr.year = Y;
305			yr.style.display = "block";
306			show = true;
307		} else {
308			yr.style.display = "none";
309		}
310		yr = yr.nextSibling;
311		Y += fwd ? cal.yearStep : -cal.yearStep;
312	}
313	if (show) {
314		var s = yc.style;
315		s.display = "block";
316		if (cd.navtype < 0)
317			s.left = cd.offsetLeft + "px";
318		else {
319			var ycw = yc.offsetWidth;
320			if (typeof ycw == "undefined")
321				// Konqueror brain-dead techniques
322				ycw = 50;
323			s.left = (cd.offsetLeft + cd.offsetWidth - ycw) + "px";
324		}
325		s.top = (cd.offsetTop + cd.offsetHeight) + "px";
326	}
327};
328
329// event handlers
330
331Calendar.tableMouseUp = function(ev) {
332	var cal = Calendar._C;
333	if (!cal) {
334		return false;
335	}
336	if (cal.timeout) {
337		clearTimeout(cal.timeout);
338	}
339	var el = cal.activeDiv;
340	if (!el) {
341		return false;
342	}
343	var target = Calendar.getTargetElement(ev);
344	ev || (ev = window.event);
345	Calendar.removeClass(el, "active");
346	if (target == el || target.parentNode == el) {
347		Calendar.cellClick(el, ev);
348	}
349	var mon = Calendar.findMonth(target);
350	var date = null;
351	if (mon) {
352		date = new Date(cal.date);
353		if (mon.month != date.getMonth()) {
354			date.setMonth(mon.month);
355			cal.setDate(date);
356			cal.dateClicked = false;

357			cal.callHandler();
358		}
359	} else {
360		var year = Calendar.findYear(target);
361		if (year) {
362			date = new Date(cal.date);
363			if (year.year != date.getFullYear()) {
364				date.setFullYear(year.year);
365				cal.setDate(date);
366				cal.dateClicked = false;
367				cal.callHandler();
368			}
369		}
370	}
371	with (Calendar) {
372		removeEvent(document, "mouseup", tableMouseUp);
373		removeEvent(document, "mouseover", tableMouseOver);
374		removeEvent(document, "mousemove", tableMouseOver);
375		cal._hideCombos();
376		_C = null;
377		return stopEvent(ev);
378	}
379};
380
381Calendar.tableMouseOver = function (ev) {
382	var cal = Calendar._C;
383	if (!cal) {
384		return;
385	}
386	var el = cal.activeDiv;
387	var target = Calendar.getTargetElement(ev);
388	if (target == el || target.parentNode == el) {
389		Calendar.addClass(el, "hilite active");
390		Calendar.addClass(el.parentNode, "rowhilite");
391	} else {
392		if (typeof el.navtype == "undefined" || (el.navtype != 50 && (el.navtype == 0 || Math.abs(el.navtype) > 2)))
393			Calendar.removeClass(el, "active");
394		Calendar.removeClass(el, "hilite");
395		Calendar.removeClass(el.parentNode, "rowhilite");
396	}
397	ev || (ev = window.event);
398	if (el.navtype == 50 && target != el) {
399		var pos = Calendar.getAbsolutePos(el);
400		var w = el.offsetWidth;
401		var x = ev.clientX;
402		var dx;
403		var decrease = true;
404		if (x > pos.x + w) {
405			dx = x - pos.x - w;
406			decrease = false;
407		} else
408			dx = pos.x - x;
409
410		if (dx < 0) dx = 0;
411		var range = el._range;
412		var current = el._current;
413		var count = Math.floor(dx / 10) % range.length;
414		for (var i = range.length; --i >= 0;)
415			if (range[i] == current)
416				break;
417		while (count-- > 0)
418			if (decrease) {
419				if (--i < 0)
420					i = range.length - 1;
421			} else if ( ++i >= range.length )
422				i = 0;
423		var newval = range[i];
424		el.innerHTML = newval;
425
426		cal.onUpdateTime();
427	}
428	var mon = Calendar.findMonth(target);
429	if (mon) {
430		if (mon.month != cal.date.getMonth()) {
431			if (cal.hilitedMonth) {
432				Calendar.removeClass(cal.hilitedMonth, "hilite");
433			}

434			Calendar.addClass(mon, "hilite");
435			cal.hilitedMonth = mon;
436		} else if (cal.hilitedMonth) {
437			Calendar.removeClass(cal.hilitedMonth, "hilite");
438		}
439	} else {
440		if (cal.hilitedMonth) {
441			Calendar.removeClass(cal.hilitedMonth, "hilite");
442		}
443		var year = Calendar.findYear(target);
444		if (year) {
445			if (year.year != cal.date.getFullYear()) {
446				if (cal.hilitedYear) {
447					Calendar.removeClass(cal.hilitedYear, "hilite");
448				}
449				Calendar.addClass(year, "hilite");
450				cal.hilitedYear = year;
451			} else if (cal.hilitedYear) {
452				Calendar.removeClass(cal.hilitedYear, "hilite");
453			}
454		} else if (cal.hilitedYear) {
455			Calendar.removeClass(cal.hilitedYear, "hilite");
456		}
457	}
458	return Calendar.stopEvent(ev);
459};
460
461Calendar.tableMouseDown = function (ev) {
462	if (Calendar.getTargetElement(ev) == Calendar.getElement(ev)) {
463		return Calendar.stopEvent(ev);
464	}
465};
466
467Calendar.calDragIt = function (ev) {
468	var cal = Calendar._C;
469	if (!(cal && cal.dragging)) {
470		return false;
471	}
472	var posX;
473	var posY;
474	if (Calendar.is_ie) {
475		posY = window.event.clientY + document.body.scrollTop;
476		posX = window.event.clientX + document.body.scrollLeft;
477	} else {
478		posX = ev.pageX;
479		posY = ev.pageY;
480	}
481	cal.hideShowCovered();
482	var st = cal.element.style;
483	st.left = (posX - cal.xOffs) + "px";
484	st.top = (posY - cal.yOffs) + "px";
485	return Calendar.stopEvent(ev);
486};
487
488Calendar.calDragEnd = function (ev) {
489	var cal = Calendar._C;
490	if (!cal) {
491		return false;
492	}
493	cal.dragging = false;
494	with (Calendar) {
495		removeEvent(document, "mousemove", calDragIt);
496		removeEvent(document, "mouseup", calDragEnd);
497		tableMouseUp(ev);
498	}
499	cal.hideShowCovered();
500};
501
502Calendar.dayMouseDown = function(ev) {
503	var el = Calendar.getElement(ev);
504	if (el.disabled) {
505		return false;
506	}
507	var cal = el.calendar;
508	cal.activeDiv = el;
509	Calendar._C = cal;
510	if (el.navtype != 300) with (Calendar) {
511		if (el.navtype == 50) {
512			el._current = el.innerHTML;
513			addEvent(document, "mousemove", tableMouseOver);
514		} else
515			addEvent(document, Calendar.is_ie5 ? "mousemove" : "mouseover", tableMouseOver);
516		addClass(el, "hilite active");
517		addEvent(document, "mouseup", tableMouseUp);
518	} else if (cal.isPopup) {
519		cal._dragStart(ev);
520	}
521	if (el.navtype == -1 || el.navtype == 1) {
522		if (cal.timeout) clearTimeout(cal.timeout);
523		cal.timeout = setTimeout("Calendar.showMonthsCombo()", 250);
524	} else if (el.navtype == -2 || el.navtype == 2) {
525		if (cal.timeout) clearTimeout(cal.timeout);
526		cal.timeout = setTimeout((el.navtype > 0) ? "Calendar.showYearsCombo(true)" : "Calendar.showYearsCombo(false)", 250);
527	} else {
528		cal.timeout = null;
529	}
530	return Calendar.stopEvent(ev);
531};
532
533Calendar.dayMouseDblClick = function(ev) {
534	Calendar.cellClick(Calendar.getElement(ev), ev || window.event);
535	if (Calendar.is_ie) {
536		document.selection.empty();
537	}
538};
539
540Calendar.dayMouseOver = function(ev) {
541	var el = Calendar.getElement(ev);
542	if (Calendar.isRelated(el, ev) || Calendar._C || el.disabled) {
543		return false;
544	}
545	if (el.ttip) {
546		if (el.ttip.substr(0, 1) == "_") {
547			el.ttip = el.caldate.print(el.calendar.ttDateFormat) + el.ttip.substr(1);
548		}
549		el.calendar.tooltips.innerHTML = el.ttip;
550	}
551	if (el.navtype != 300) {
552		Calendar.addClass(el, "hilite");
553		if (el.caldate) {
554			Calendar.addClass(el.parentNode, "rowhilite");
555		}
556	}
557	return Calendar.stopEvent(ev);
558};
559
560Calendar.dayMouseOut = function(ev) {
561	with (Calendar) {
562		var el = getElement(ev);
563		if (isRelated(el, ev) || _C || el.disabled)
564			return false;
565		removeClass(el, "hilite");
566		if (el.caldate)
567			removeClass(el.parentNode, "rowhilite");
568		if (el.calendar)
569			el.calendar.tooltips.innerHTML = _TT["SEL_DATE"];
570		return stopEvent(ev);
571	}
572};
573
574/**
575 *  A generic "click" handler :) handles all types of buttons defined in this
576 *  calendar.
577 */
578Calendar.cellClick = function(el, ev) {
579	var cal = el.calendar;
580	var closing = false;
581	var newdate = false;
582	var date = null;
583	if (typeof el.navtype == "undefined") {
584		if (cal.currentDateEl) {
585			Calendar.removeClass(cal.currentDateEl, "selected");
586			Calendar.addClass(el, "selected");
587			closing = (cal.currentDateEl == el);
588			if (!closing) {
589				cal.currentDateEl = el;
590			}
591		}
592		cal.date.setDateOnly(el.caldate);
593		date = cal.date;
594		var other_month = !(cal.dateClicked = !el.otherMonth);
595		if (!other_month && !cal.currentDateEl)
596			cal._toggleMultipleDate(new Date(date));
597		else
598			newdate = !el.disabled;
599		// a date was clicked
600		if (other_month)
601			cal._init(cal.firstDayOfWeek, date);
602	} else {
603		if (el.navtype == 200) {
604			Calendar.removeClass(el, "hilite");
605			cal.callCloseHandler();
606			return;
607		}
608		date = new Date(cal.date);
609		if (el.navtype == 0)
610			date.setDateOnly(new Date()); // TODAY
611		// unless "today" was clicked, we assume no date was clicked so
612		// the selected handler will know not to close the calenar when
613		// in single-click mode.
614		// cal.dateClicked = (el.navtype == 0);
615		cal.dateClicked = false;

616		var year = date.getFullYear();
617		var mon = date.getMonth();
618		function setMonth(m) {
619			var day = date.getDate();
620			var max = date.getMonthDays(m);
621			if (day > max) {
622				date.setDate(max);
623			}
624			date.setMonth(m);
625		};
626		switch (el.navtype) {
627		    case 400:
628			Calendar.removeClass(el, "hilite");
629			var text = Calendar._TT["ABOUT"];
630			if (typeof text != "undefined") {
631				text += cal.showsTime ? Calendar._TT["ABOUT_TIME"] : "";
632			} else {
633				// FIXME: this should be removed as soon as lang files get updated!
634				text = "Help and about box text is not translated into this language.\n" +
635					"If you know this language and you feel generous please update\n" +
636					"the corresponding file in \"lang\" subdir to match calendar-en.js\n" +
637					"and send it back to <[email protected]> to get it into the distribution  ;-)\n\n" +
638					"Thank you!\n" +
639					"http://dynarch.com/mishoo/calendar.epl\n";
640			}
641			alert(text);
642			return;
643		    case -2:
644			if (year > cal.minYear) {
645				date.setFullYear(year - 1);
646			}
647			break;
648		    case -1:
649			if (mon > 0) {
650				setMonth(mon - 1);
651			} else if (year-- > cal.minYear) {
652				date.setFullYear(year);
653				setMonth(11);
654			}
655			break;
656		    case 1:
657			if (mon < 11) {
658				setMonth(mon + 1);
659			} else if (year < cal.maxYear) {
660				date.setFullYear(year + 1);
661				setMonth(0);
662			}
663			break;
664		    case 2:
665			if (year < cal.maxYear) {
666				date.setFullYear(year + 1);
667			}
668			break;
669		    case 100:
670			cal.setFirstDayOfWeek(el.fdow);
671			return;
672		    case 50:
673			var range = el._range;
674			var current = el.innerHTML;
675			for (var i = range.length; --i >= 0;)
676				if (range[i] == current)
677					break;
678			if (ev && ev.shiftKey) {
679				if (--i < 0)
680					i = range.length - 1;
681			} else if ( ++i >= range.length )
682				i = 0;
683			var newval = range[i];
684			el.innerHTML = newval;
685			cal.onUpdateTime();
686			return;
687		    case 0:
688			// TODAY will bring us here
689			if ((typeof cal.getDateStatus == "function") &&
690			    cal.getDateStatus(date, date.getFullYear(), date.getMonth(), date.getDate())) {
691				return false;
692			}
693			break;
694		}
695		if (!date.equalsTo(cal.date)) {
696			cal.setDate(date);
697			newdate = true;
698		} else if (el.navtype == 0)
699			newdate = closing = true;
700	}
701	if (newdate) {
702		ev && cal.callHandler();
703	}
704	if (closing) {
705		Calendar.removeClass(el, "hilite");
706		ev && cal.callCloseHandler();
707	}
708};
709
710// END: CALENDAR STATIC FUNCTIONS
711
712// BEGIN: CALENDAR OBJECT FUNCTIONS
713
714/**
715 *  This function creates the calendar inside the given parent.  If _par is
716 *  null than it creates a popup calendar inside the BODY element.  If _par is
717 *  an element, be it BODY, then it creates a non-popup calendar (still
718 *  hidden).  Some properties need to be set before calling this function.
719 */
720Calendar.prototype.create = function (_par) {
721	var parent = null;
722	if (! _par) {
723		// default parent is the document body, in which case we create
724		// a popup calendar.
725		parent = document.getElementsByTagName("body")[0];
726		this.isPopup = true;
727	} else {
728		parent = _par;
729		this.isPopup = false;
730	}
731	this.date = this.dateStr ? new Date(this.dateStr) : new Date();
732
733	var table = Calendar.createElement("table");
734	this.table = table;
735	table.cellSpacing = 0;
736	table.cellPadding = 0;
737	table.calendar = this;
738	Calendar.addEvent(table, "mousedown", Calendar.tableMouseDown);
739
740	var div = Calendar.createElement("div");
741	this.element = div;
742	div.className = "calendar";
743	div.style.zIndex = 9000; //***
744	if (this.isPopup) {
745		div.style.position = "absolute";
746		div.style.display = "none";
747	}
748	div.appendChild(table);
749
750	var thead = Calendar.createElement("thead", table);
751	var cell = null;
752	var row = null;
753
754	var cal = this;
755	var hh = function (text, cs, navtype) {
756		cell = Calendar.createElement("td", row);
757		cell.colSpan = cs;
758		cell.className = "button";
759		if (navtype != 0 && Math.abs(navtype) <= 2)
760			cell.className += " nav";
761		Calendar._add_evs(cell);
762		cell.calendar = cal;
763		cell.navtype = navtype;
764		cell.innerHTML = "<div unselectable='on'>

764" + text + "</div>";
765		return cell;
766	};
767
768	row = Calendar.createElement("tr", thead);
769	var title_length = 6;
770	(this.isPopup) && --title_length;
771	(this.weekNumbers) && ++title_length;
772
773	hh("?", 1, 400).ttip = Calendar._TT["INFO"];
774	this.title = hh("", title_length, 300);
775	this.title.className = "title";
776	if (this.isPopup) {
777		this.title.ttip = Calendar._TT["DRAG_TO_MOVE"];
778		this.title.style.cursor = "move";
779		hh("&#x00d7;", 1, 200).ttip = Calendar._TT["CLOSE"];
780	}
781
782	row = Calendar.createElement("tr", thead);
783	row.className = "headrow";
784
785	this._nav_py = hh("&#x00ab;", 1, -2);
786	this._nav_py.ttip = Calendar._TT["PREV_YEAR"];
787
788	this._nav_pm = hh("&#x2039;", 1, -1);
789	this._nav_pm.ttip = Calendar._TT["PREV_MONTH"];
790
791	this._nav_now = hh(Calendar._TT["TODAY"], this.weekNumbers ? 4 : 3, 0);
792	this._nav_now.ttip = Calendar._TT["GO_TODAY"];
793
794	this._nav_nm = hh("&#x203a;", 1, 1);
795	this._nav_nm.ttip = Calendar._TT["NEXT_MONTH"];
796
797	this._nav_ny = hh("&#x00bb;", 1, 2);
798	this._nav_ny.ttip = Calendar._TT["NEXT_YEAR"];
799
800	// day names
801	row = Calendar.createElement("tr", thead);
802	row.className = "daynames";
803	if (this.weekNumbers) {
804		cell = Calendar.createElement("td", row);
805		cell.className = "name wn";
806		cell.innerHTML = Calendar._TT["WK"];
807	}
808	for (var i = 7; i > 0; --i) {
809		cell = Calendar.createElement("td", row);
810		if (!i) {
811			cell.navtype = 100;
812			cell.calendar = this;
813			Calendar._add_evs(cell);
814		}
815	}
816	this.firstdayname = (this.weekNumbers) ? row.firstChild.nextSibling : row.firstChild;
817	this._displayWeekdays();
818
819	var tbody = Calendar.createElement("tbody", table);
820	this.tbody = tbody;
821
822	for (i = 6; i > 0; --i) {
823		row = Calendar.createElement("tr", tbody);
824		if (this.weekNumbers) {
825			cell = Calendar.createElement("td", row);
826		}
827		for (var j = 7; j > 0; --j) {
828			cell = Calendar.createElement("td", row);
829			cell.calendar = this;
830			Calendar._add_evs(cell);
831		}
832	}
833
834	if (this.showsTime) {
835		row = Calendar.createElement("tr", tbody);
836		row.className = "time";
837
838		cell = Calendar.createElement("td", row);
839		cell.className = "time";
840		cell.colSpan = 2;
841		cell.innerHTML = Calendar._TT["TIME"] || "&nbsp;";
842
843		cell = Calendar.createElement("td", row);
844		cell.className = "time";
845		cell.colSpan = this.weekNumbers ? 4 : 3;
846
847		(function(){
848			function makeTimePart(className, init, range_start, range_end) {
849				var part = Calendar.createElement("span", cell);
850				part.className = className;
851				part.innerHTML = init;
852				part.calendar = cal;
853				part.ttip = Calendar._TT["TIME_PART"];
854				part.navtype = 50;
855				part._range = [];
856				if (typeof range_start != "number")
857					part._range = range_start;
858				else {
859					for (var i = range_start; i <= range_end; ++i) {
860						var txt;
861						if (i < 10 && range_end >= 10) txt = '0' + i;
862						else txt = '' + i;
863						part._range[part._range.length] = txt;
864					}
865				}
866				Calendar._add_evs(part);
867				return part;
868			};
869			var hrs = cal.date.getHours();
870			var mins = cal.date.getMinutes();
871			var t12 = !cal.time24;
872			var pm = (hrs > 12);
873			if (t12 && pm) hrs -= 12;
874			var H = makeTimePart("hour", hrs, t12 ? 1 : 0, t12 ? 12 : 23);
875			var span = Calendar.createElement("span", cell);
876			span.innerHTML = ":";
877			span.className = "colon";
878			var M = makeTimePart("minute", mins, 0, 59);
879			var AP = null;
880			cell = Calendar.createElement("td", row);
881			cell.className = "time";
882			cell.colSpan = 2;
883			if (t12)
884				AP = makeTimePart("ampm", pm ? "pm" : "am", ["am", "pm"]);
885			else
886				cell.innerHTML = "&nbsp;";
887
888			cal.onSetTime = function() {
889				var pm, hrs = this.date.getHours(),
890					mins = this.date.getMinutes();
891				if (t12) {
892					pm = (hrs >= 12);
893					if (pm) hrs -= 12;
894					if (hrs == 0) hrs = 12;
895					AP.innerHTML = pm ? "pm" : "am";
896				}
897				H.innerHTML = (hrs < 10) ? ("0" + hrs) : hrs;
898				M.innerHTML = (mins < 10) ? ("0" + mins) : mins;
899			};
900
901			cal.onUpdateTime = function() {
902				var date = this.date;
903				var h = parseInt(H.innerHTML, 10);
904				if (t12) {
905					if (/pm/i.test(AP.innerHTML) && h < 12)
906						h += 12;
907					else if (/am/i.test(AP.innerHTML) && h == 12)
908						h = 0;
909				}
910				var d = date.getDate();
911				var m = date.getMonth();
912				var y = date.getFullYear();
913				date.setHours(h);
914				date.setMinutes(parseInt(M.innerHTML, 10));
915				date.setFullYear(y);
916				date.setMonth(m);
917				date.setDate(d);
918				this.dateClicked = false;

919				this.callHandler();
920			};
921		})();
922	} else {
923		this.onSetTime = this.onUpdateTime = function() {};
924	}
925
926	var tfoot = Calendar.createElement("tfoot", table);
927
928	row = Calendar.createElement("tr", tfoot);
929	row.className = "footrow";
930
931	cell = hh(Calendar._TT["SEL_DATE"], this.weekNumbers ? 8 : 7, 300);
932	cell.className = "ttip";
933	if (this.isPopup) {
934		cell.ttip = Calendar._TT["DRAG_TO_MOVE"];
935		cell.style.cursor = "move";
936	}
937	this.tooltips = cell;
938
939	div = Calendar.createElement("div", this.element);
940	this.monthsCombo = div;
941	div.className = "combo";
942	for (i = 0; i < Calendar._MN.length; ++i) {
943		var mn = Calendar.createElement("div");
944		mn.className = Calendar.is_ie ? "label-IEfix" : "label";
945		mn.month = i;
946		mn.innerHTML = Calendar._SMN[i];
947		div.appendChild(mn);
948	}
949
950	div = Calendar.createElement("div", this.element);
951	this.yearsCombo = div;
952	div.className = "combo";
953	for (i = 12; i > 0; --i) {
954		var yr = Calendar.createElement("div");
955		yr.className = Calendar.is_ie ? "label-IEfix" : "label";
956		div.appendChild(yr);
957	}
958
959	this._init(this.firstDayOfWeek, this.date);
960	parent.appendChild(this.element);
961};
962
963/** keyboard navigation, only for popup calendars */
964Calendar._keyEvent = function(ev) {
965	var cal = window._dynarch_popupCalendar;
966	if (!cal || cal.multiple)
967		return false;
968	(Calendar.is_ie) && (ev = window.event);
969	var act = (Calendar.is_ie || ev.type == "keypress"),
970		K = ev.keyCode;
971	if (ev.ctrlKey) {
972		switch (K) {
973		    case 37: // KEY left
974			act && Calendar.cellClick(cal._nav_pm);
975			break;
976		    case 38: // KEY up
977			act && Calendar.cellClick(cal._nav_py);
978			break;
979		    case 39: // KEY right
980			act && Calendar.cellClick(cal._nav_nm);
981			break;
982		    case 40: // KEY down
983			act && Calendar.cellClick(cal._nav_ny);
984			break;
985		    default:
986			return false;
987		}
988	} else switch (K) {
989	    case 32: // KEY space (now)
990		Calendar.cellClick(cal._nav_now);
991		break;
992	    case 27: // KEY esc
993		act && cal.callCloseHandler();
994		break;
995	    case 37: // KEY left
996	    case 38: // KEY up
997	    case 39: // KEY right
998	    case 40: // KEY down
999		if (act) {
1000			var prev, x, y, ne, el, step;
1001			prev = K == 37 || K == 38;
1002			step = (K == 37 || K == 39) ? 1 : 7;
1003			function setVars() {
1004				el = cal.currentDateEl;
1005				var p = el.pos;
1006				x = p & 15;
1007				y = p >> 4;
1008				ne = cal.ar_days[y][x];
1009			};setVars();
1010			function prevMonth() {
1011				var date = new Date(cal.date);
1012				date.setDate(date.getDate() - step);
1013				cal.setDate(date);
1014			};
1015			function nextMonth() {
1016				var date = new Date(cal.date);
1017				date.setDate(date.getDate() + step);
1018				cal.setDate(date);
1019			};
1020			while (1) {
1021				switch (K) {
1022				    case 37: // KEY left
1023					if (--x >= 0)
1024						ne = cal.ar_days[y][x];
1025					else {
1026						x = 6;
1027						K = 38;
1028						continue;
1029					}
1030					break;
1031				    case 38: // KEY up
1032					if (--y >= 0)
1033						ne = cal.ar_days[y][x];
1034					else {
1035						prevMonth();
1036						setVars();
1037					}
1038					break;
1039				    case 39: // KEY right
1040					if (++x < 7)
1041						ne = cal.ar_days[y][x];
1042					else {
1043						x = 0;
1044						K = 40;
1045						continue;
1046					}
1047					break;
1048				    case 40: // KEY down
1049					if (++y < cal.ar_days.length)
1050						ne = cal.ar_days[y][x];
1051					else {
1052						nextMonth();
1053						setVars();
1054					}
1055					break;
1056				}
1057				break;
1058			}
1059			if (ne) {
1060				if (!ne.disabled)
1061					Calendar.cellClick(ne);
1062				else if (prev)
1063					prevMonth();
1064				else
1065					nextMonth();
1066			}
1067		}
1068		break;
1069	    case 13: // KEY enter
1070		if (act)
1071			Calendar.cellClick(cal.currentDateEl, ev);
1072		break;
1073	    default:
1074		return false;
1075	}
1076	return Calendar.stopEvent(ev);
1077};
1078
1079/**
1080 *  (RE)Initializes the calendar to the given date and firstDayOfWeek
1081 */
1082Calendar.prototype._init = function (firstDayOfWeek, date) {
1083	var today = new Date(),
1084		TY = today.getFullYear(),
1085		TM = today.getMonth(),
1086		TD = today.getDate();
1087	this.table.style.visibility = "hidden";
1088	var year = date.getFullYear();
1089	if (year < this.minYear) {
1090		year = this.minYear;
1091		date.setFullYear(year);
1092	} else if (year > this.maxYear) {
1093		year = this.maxYear;
1094		date.setFullYear(year);
1095	}
1096	this.firstDayOfWeek = firstDayOfWeek;
1097	this.date = new Date(date);

1098	var month = date.getMonth();
1099	var mday = date.getDate();
1100	var no_days = date.getMonthDays();
1101
1102	// calendar voodoo for computing the first day that would actually be
1103	// displayed in the calendar, even if it's from the previous month.
1104	// WARNING: this is magic. ;-)
1105	date.setDate(1);
1106	var day1 = (date.getDay() - this.firstDayOfWeek) % 7;
1107	if (day1 < 0)
1108		day1 += 7;
1109	date.setDate(-day1);
1110	date.setDate(date.getDate() + 1);
1111
1112	var row = this.tbody.firstChild;
1113	var MN = Calendar._SMN[month];
1114	var ar_days = this.ar_days = new Array();
1115	var weekend = Calendar._TT["WEEKEND"];
1116	var dates = this.multiple ? (this.datesCells = {}) : null;
1117	for (var i = 0; i < 6; ++i, row = row.nextSibling) {
1118		var cell = row.firstChild;
1119		if (this.weekNumbers) {
1120			cell.className = "day wn";
1121			cell.innerHTML = date.getWeekNumber();
1122			cell = cell.nextSibling;
1123		}
1124		row.className = "daysrow";
1125		var hasdays = false, iday, dpos = ar_days[i] = [];
1126		for (var j = 0; j < 7; ++j, cell = cell.nextSibling, date.setDate(iday + 1)) {
1127			iday = date.getDate();
1128			var wday = date.getDay();
1129			cell.className = "day";
1130			cell.pos = i << 4 | j;
1131			dpos[j] = cell;
1132			var current_month = (date.getMonth() == month);
1133			if (!current_month) {
1134				if (this.showsOtherMonths) {
1135					cell.className += " othermonth";
1136					cell.otherMonth = true;
1137				} else {
1138					cell.className = "emptycell";
1139					cell.innerHTML = "&nbsp;";
1140					cell.disabled = true;
1141					continue;
1142				}
1143			} else {
1144				cell.otherMonth = false;
1145				hasdays = true;
1146			}
1147			cell.disabled = false;
1148			cell.innerHTML = this.getDateText ? this.getDateText(date, iday) : iday;
1149			if (dates)
1150				dates[date.print("%Y%m%d")] = cell;
1151			if (this.getDateStatus) {
1152				var status = this.getDateStatus(date, year, month, iday);
1153				if (this.getDateToolTip) {
1154					var toolTip = this.getDateToolTip(date, year, month, iday);
1155					if (toolTip)
1156						cell.title = toolTip;
1157				}
1158				if (status === true) {
1159					cell.className += " disabled";
1160					cell.disabled = true;
1161				} else {
1162					if (/disabled/i.test(status))
1163						cell.disabled = true;
1164					cell.className += " " + status;
1165				}
1166			}
1167			if (!cell.disabled) {
1168				cell.caldate = new Date(date);
1169				cell.ttip = "_";
1170				if (!this.multiple && current_month
1171				    && iday == mday && this.hiliteToday) {
1172					cell.className += " selected";
1173					this.currentDateEl = cell;
1174				}
1175				if (date.getFullYear() == TY &&
1176				    date.getMonth() == TM &&
1177				    iday == TD) {
1178					cell.className += " today";
1179					cell.ttip += Calendar._TT["PART_TODAY"];
1180				}
1181				if (weekend.indexOf(wday.toString()) != -1)
1182					cell.className += cell.otherMonth ? " oweekend" : " weekend";
1183			}
1184		}
1185		if (!(hasdays || this.showsOtherMonths))
1186			row.className = "emptyrow";
1187	}
1188	this.title.innerHTML = Calendar._MN[month] + ", " + year;
1189	this.onSetTime();
1190	this.table.style.visibility = "visible";
1191	this._initMultipleDates();
1192	// PROFILE
1193	// this.tooltips.innerHTML = "Generated in " + ((new Date()) - today) + " ms";
1194};
1195
1196Calendar.prototype._initMultipleDates = function() {
1197	if (this.multiple) {
1198		for (var i in this.multiple) {
1199			var cell = this.datesCells[i];
1200			var d = this.multiple[i];
1201			if (!d)
1202				continue;
1203			if (cell)
1204				cell.className += " selected";
1205		}
1206	}
1207};
1208
1209Calendar.prototype._toggleMultipleDate = function(date) {
1210	if (this.multiple) {
1211		var ds = date.print("%Y%m%d");
1212		var cell = this.datesCells[ds];
1213		if (cell) {
1214			var d = this.multiple[ds];
1215			if (!d) {
1216				Calendar.addClass(cell, "selected");
1217				this.multiple[ds] = date;
1218			} else {
1219				Calendar.removeClass(cell, "selected");
1220				delete this.multiple[ds];
1221			}
1222		}
1223	}
1224};
1225
1226Calendar.prototype.setDateToolTipHandler = function (unaryFunction) {
1227	this.getDateToolTip = unaryFunction;
1228};
1229
1230/**
1231 *  Calls _init function above for going to a certain date (but only if the
1232 *  date is different than the currently selected one).
1233 */
1234Calendar.prototype.setDate = function (date) {
1235	if (!date.equalsTo(this.date)) {
1236		this._init(this.firstDayOfWeek, date);
1237	}
1238};
1239
1240/**
1241 *  Refreshes the calendar.  Useful if the "disabledHandler" function is
1242 *  dynamic, meaning that the list of disabled date can change at runtime.
1243 *  Just * call this function if you think that the list of disabled dates
1244 *  should * change.
1245 */
1246Calendar.prototype.refresh = function () {
1247	this._init(this.firstDayOfWeek, this.date);
1248};
1249
1250/** Modifies the "firstDayOfWeek" parameter (pass 0 for Synday, 1 for Monday, etc.). */
1251Calendar.prototype.setFirstDayOfWeek = function (firstDayOfWeek) {
1252	this._init(firstDayOfWeek, this.date);
1253	this._displayWeekdays();
1254};
1255
1256/**
1257 *  Allows customization of what dates are enabled.  The "unaryFunction"
1258 *  parameter must be a function object that receives the date (as a JS Date
1259 *  object) and returns a boolean value.  If the returned value is true then
1260 *  the passed date will be marked as disabled.
1261 */
1262Calendar.prototype.setDateStatusHandler = Calendar.prototype.setDisabledHandler = function (unaryFunction) {
1263	this.getDateStatus = unaryFunction;
1264};
1265
1266/** Customization of allowed year range for the calendar. */
1267Calendar.prototype.setRange = function (a, z) {
1268	this.minYear = a;
1269	this.maxYear = z;
1270};
1271
1272/** Calls the first user handler (selectedHandler). */
1273Calendar.prototype.callHandler = function () {
1274	if (this.onSelected) {
1275		this.onSelected(this, this.date.print(this.dateFormat));
1276	}
1277};
1278
1279/** Calls the second user handler (closeHandler). */
1280Calendar.prototype.callCloseHandler = function () {
1281	if (this.onClose) {
1282		this.onClose(this);
1283	}
1284	this.hideShowCovered();
1285};
1286
1287/** Removes the calendar object from the DOM tree and destroys it. */
1288Calendar.prototype.destroy = function () {
1289	var el = this.element.parentNode;
1290	el.removeChild(this.element);
1291	Calendar._C = null;
1292	window._dynarch_popupCalendar = null;
1293};
1294
1295/**
1296 *  Moves the calendar element to a different section in the DOM tree (changes
1297 *  its parent).
1298 */
1299Calendar.prototype.reparent = function (new_parent) {
1300	var el = this.element;
1301	el.parentNode.removeChild(el);
1302	new_parent.appendChild(el);
1303};
1304
1305// This gets called when the user presses a mouse button anywhere in the
1306// document, if the calendar is shown.  If the click was outside the open
1307// calendar this function closes it.
1308Calendar._checkCalendar = function(ev) {
1309	var calendar = window._dynarch_popupCalendar;
1310	if (!calendar) {
1311		return false;

1312	}
1313	var el = Calendar.is_ie ? Calendar.getElement(ev) : Calendar.getTargetElement(ev);
1314	for (; el != null && el != calendar.element; el = el.parentNode);
1315	if (el == null) {
1316		// calls closeHandler which should hide the calendar.
1317		window._dynarch_popupCalendar.callCloseHandler();
1318		return Calendar.stopEvent(ev);
1319	}
1320};
1321
1322/** Shows the calendar. */
1323Calendar.prototype.show = function () {
1324	var rows = this.table.getElementsByTagName("tr");
1325	for (var i = rows.length; i > 0;) {
1326		var row = rows[--i];
1327		Calendar.removeClass(row, "rowhilite");
1328		var cells = row.getElementsByTagName("td");
1329		for (var j = cells.length; j > 0;) {
1330			var cell = cells[--j];
1331			Calendar.removeClass(cell, "hilite");
1332			Calendar.removeClass(cell, "active");
1333		}
1334	}
1335	this.element.style.display = "block";
1336	this.hidden = false;
1337	if (this.isPopup) {
1338		window._dynarch_popupCalendar = this;
1339		Calendar.addEvent(document, "keydown", Calendar._keyEvent);
1340		Calendar.addEvent(document, "keypress", Calendar._keyEvent);
1341		Calendar.addEvent(document, "mousedown", Calendar._checkCalendar);
1342	}
1343	this.hideShowCovered();
1344};
1345
1346/**
1347 *  Hides the calendar.  Also removes any "hilite" from the class of any TD
1348 *  element.
1349 */
1350Calendar.prototype.hide = function () {
1351	if (this.isPopup) {
1352		Calendar.removeEvent(document, "keydown", Calendar._keyEvent);
1353		Calendar.removeEvent(document, "keypress", Calendar._keyEvent);
1354		Calendar.removeEvent(document, "mousedown", Calendar._checkCalendar);
1355	}
1356	this.element.style.display = "none";
1357	this.hidden = true;
1358	this.hideShowCovered();
1359};
1360
1361/**
1362 *  Shows the calendar at a given absolute position (beware that, depending on
1363 *  the calendar element style -- position property -- this might be relative
1364 *  to the parent's containing rectangle).
1365 */
1366Calendar.prototype.showAt = function (x, y) {
1367	var s = this.element.style;
1368	s.left = x + "px";
1369	s.top = y + "px";
1370	this.show();
1371};
1372
1373/** Shows the calendar near a given element. */
1374Calendar.prototype.showAtElement = function (el, opts) {
1375	var self = this;
1376	var p = Calendar.getAbsolutePos(el);
1377	if (!opts || typeof opts != "string") {
1378		this.showAt(p.x, p.y + el.offsetHeight);
1379		return true;
1380	}
1381	function fixPosition(box) {
1382		if (box.x < 0)
1383			box.x = 0;
1384		if (box.y < 0)
1385			box.y = 0;
1386		var cp = document.createElement("div");
1387		var s = cp.style;
1388		s.position = "absolute";
1389		s.right = s.bottom = s.width = s.height = "0px";
1390		document.body.appendChild(cp);
1391		var br = Calendar.getAbsolutePos(cp);
1392		document.body.removeChild(cp);
1393		if (Calendar.is_ie) {
1394			br.y += document.body.scrollTop;
1395			br.x += document.body.scrollLeft;
1396		} else {
1397			br.y += window.scrollY;
1398			br.x += window.scrollX;
1399		}
1400		var tmp = box.x + box.width - br.x;
1401		if (tmp > 0) box.x -= tmp;
1402		tmp = box.y + box.height - br.y;
1403		if (tmp > 0) box.y -= tmp;
1404	};
1405	this.element.style.display = "block";
1406	Calendar.continuation_for_the_fucking_khtml_browser = function() {
1407		var w = self.element.offsetWidth;
1408		var h = self.element.offsetHeight;
1409		self.element.style.display = "none";
1410		var valign = opts.substr(0, 1);
1411		var halign = "l";
1412		if (opts.length > 1) {
1413			halign = opts.substr(1, 1);
1414		}
1415		// vertical alignment
1416		switch (valign) {
1417		    case "T": p.y -= h; break;
1418		    case "B": p.y += el.offsetHeight; break;
1419		    case "C": p.y += (el.offsetHeight - h) / 2; break;
1420		    case "t": p.y += el.offsetHeight - h; break;
1421		    case "b": break; // already there
1422		}
1423		// horizontal alignment
1424		switch (halign) {
1425		    case "L": p.x -= w; break;
1426		    case "R": p.x += el.offsetWidth; break;
1427		    case "C": p.x += (el.offsetWidth - w) / 2; break;
1428		    case "l": p.x += el.offsetWidth - w; break;
1429		    case "r": break; // already there
1430		}
1431		p.width = w;
1432		p.height = h + 40;
1433		self.monthsCombo.style.display = "none";
1434		fixPosition(p);
1435		self.showAt(p.x, p.y);
1436	};
1437	if (Calendar.is_khtml)
1438		setTimeout("Calendar.continuation_for_the_fucking_khtml_browser()", 10);
1439	else
1440		Calendar.continuation_for_the_fucking_khtml_browser();
1441};
1442
1443/** Customizes the date format. */
1444Calendar.prototype.setDateFormat = function (str) {
1445	this.dateFormat = str;
1446};
1447
1448/** Customizes the tooltip date format. */
1449Calendar.prototype.setTtDateFormat = function (str) {
1450	this.ttDateFormat = str;
1451};
1452
1453/**
1454 *  Tries to identify the date represented in a string.  If successful it also
1455 *  calls this.setDate which moves the calendar to the given date.
1456 */
1457Calendar.prototype.parseDate = function(str, fmt) {
1458	if (!fmt)
1459		fmt = this.dateFormat;
1460	this.setDate(Date.parseDate(str, fmt));
1461};
1462
1463Calendar.prototype.hideShowCovered = function () {
1464	if (!Calendar.is_ie && !Calendar.is_opera)
1465		return;
1466	function getVisib(obj){
1467		var value = obj.style.visibility;
1468		if (!value) {
1469			if (document.defaultView && typeof (document.defaultView.getComputedStyle) == "function") { // Gecko, W3C
1470				if (!Calendar.is_khtml)
1471					value = document.defaultView.
1472						getComputedStyle(obj, "").getPropertyValue("visibility");
1473				else
1474					value = '';
1475			} else if (obj.currentStyle) { // IE
1476				value = obj.currentStyle.visibility;
1477			} else
1478				value = '';
1479		}
1480		return value;
1481	};
1482
1483	var tags = new Array("applet", "iframe", "select");
1484	var el = this.element;
1485

1486	var p = Calendar.getAbsolutePos(el);
1487	var EX1 = p.x;
1488	var EX2 = el.offsetWidth + EX1;
1489	var EY1 = p.y;
1490	var EY2 = el.offsetHeight + EY1;
1491
1492	for (var k = tags.length; k > 0; ) {
1493		var ar = document.getElementsByTagName(tags[--k]);
1494		var cc = null;
1495
1496		for (var i = ar.length; i > 0;) {
1497			cc = ar[--i];
1498
1499			p = Calendar.getAbsolutePos(cc);
1500			var CX1 = p.x;
1501			var CX2 = cc.offsetWidth + CX1;
1502			var CY1 = p.y;
1503			var CY2 = cc.offsetHeight + CY1;
1504
1505			if (this.hidden || (CX1 > EX2) || (CX2 < EX1) || (CY1 > EY2) || (CY2 < EY1)) {
1506				if (!cc.__msh_save_visibility) {
1507					cc.__msh_save_visibility = getVisib(cc);
1508				}
1509				cc.style.visibility = cc.__msh_save_visibility;
1510			} else {
1511				if (!cc.__msh_save_visibility) {
1512					cc.__msh_save_visibility = getVisib(cc);
1513				}
1514				cc.style.visibility = "hidden";
1515			}
1516		}
1517	}
1518};
1519
1520/** Internal function; it displays the bar with the names of the weekday. */
1521Calendar.prototype._displayWeekdays = function () {
1522	var fdow = this.firstDayOfWeek;
1523	var cell = this.firstdayname;
1524	var weekend = Calendar._TT["WEEKEND"];
1525	for (var i = 0; i < 7; ++i) {
1526		cell.className = "day name";
1527		var realday = (i + fdow) % 7;
1528		if (i) {
1529			cell.ttip = Calendar._TT["DAY_FIRST"].replace("%s", Calendar._DN[realday]);
1530			cell.navtype = 100;
1531			cell.calendar = this;
1532			cell.fdow = realday;
1533			Calendar._add_evs(cell);
1534		}
1535		if (weekend.indexOf(realday.toString()) != -1) {
1536			Calendar.addClass(cell, "weekend");
1537		}
1538		cell.innerHTML = Calendar._SDN[(i + fdow) % 7];
1539		cell = cell.nextSibling;
1540	}
1541};
1542
1543/** Internal function.  Hides all combo boxes that might be displayed. */
1544Calendar.prototype._hideCombos = function () {
1545	this.monthsCombo.style.display = "none";
1546	this.yearsCombo.style.display = "none";
1547};
1548
1549/** Internal function.  Starts dragging the element. */
1550Calendar.prototype._dragStart = function (ev) {
1551	if (this.dragging) {
1552		return;
1553	}
1554	this.dragging = true;
1555	var posX;
1556	var posY;
1557	if (Calendar.is_ie) {
1558		posY = window.event.clientY + document.body.scrollTop;
1559		posX = window.event.clientX + document.body.scrollLeft;
1560	} else {
1561		posY = ev.clientY + window.scrollY;
1562		posX = ev.clientX + window.scrollX;
1563	}
1564	var st = this.element.style;
1565	this.xOffs = posX - parseInt(st.left);
1566	this.yOffs = posY - parseInt(st.top);
1567	with (Calendar) {
1568		addEvent(document, "mousemove", calDragIt);
1569		addEvent(document, "mouseup", calDragEnd);
1570	}
1571};
1572
1573// BEGIN: DATE OBJECT PATCHES
1574
1575/** Adds the number of days array to the Date object. */
1576Date._MD = new Array(31,28,31,30,31,30,31,31,30,31,30,31);
1577
1578/** Constants used for time computations */
1579Date.SECOND = 1000 /* milliseconds */;
1580Date.MINUTE = 60 * Date.SECOND;
1581Date.HOUR   = 60 * Date.MINUTE;
1582Date.DAY    = 24 * Date.HOUR;
1583Date.WEEK   =  7 * Date.DAY;
1584
1585Date.parseDate = function(str, fmt) {
1586	var today = new Date();
1587	var y = 0;
1588	var m = -1;
1589	var d = 0;
1590	var a = str.split(/\W+/);
1591	var b = fmt.match(/%./g);
1592	var i = 0, j = 0;
1593	var hr = 0;
1594	var min = 0;
1595	for (i = 0; i < a.length; ++i) {
1596		if (!a[i])
1597			continue;
1598		switch (b[i]) {
1599		    case "%d":
1600		    case "%e":
1601			d = parseInt(a[i], 10);
1602			break;
1603
1604		    case "%m":
1605			m = parseInt(a[i], 10) - 1;
1606			break;
1607
1608		    case "%Y":
1609		    case "%y":
1610			y = parseInt(a[i], 10);
1611			(y < 100) && (y += (y > 29) ? 1900 : 2000);
1612			break;
1613
1614		    case "%b":
1615		    case "%B":
1616			for (j = 0; j < 12; ++j) {
1617				if (Calendar._MN[j].substr(0, a[i].length).toLowerCase() == a[i].toLowerCase()) { m = j; break; }
1618			}
1619			break;
1620
1621		    case "%H":
1622		    case "%I":
1623		    case "%k":
1624		    case "%l":
1625			hr = parseInt(a[i], 10);
1626			break;
1627
1628		    case "%P":
1629		    case "%p":
1630			if (/pm/i.test(a[i]) && hr < 12)
1631				hr += 12;
1632			else if (/am/i.test(a[i]) && hr >= 12)
1633				hr -= 12;
1634			break;
1635
1636		    case "%M":
1637			min = parseInt(a[i], 10);
1638			break;
1639		}
1640	}
1641	if (isNaN(y)) y = today.getFullYear();
1642	if (isNaN(m)) m = today.getMonth();
1643	if (isNaN(d)) d = today.getDate();
1644	if (isNaN(hr)) hr = today.getHours();
1645	if (isNaN(min)) min = today.getMinutes();
1646	if (y != 0 && m != -1 && d != 0)
1647		return new Date(y, m, d, hr, min, 0);
1648	y = 0; m = -1; d = 0;
1649	for (i = 0; i < a.length; ++i) {
1650		if (a[i].search(/[a-zA-Z]+/) != -1) {
1651			var t = -1;
1652			for (j = 0; j < 12; ++j) {
1653				if (Calendar._MN[j].substr(0, a[i].length).toLowerCase() == a[i].toLowerCase()) { t = j; break; }
1654			}
1655			if (t != -1) {
1656				if (m != -1) {
1657					d = m+1;
1658				}
1659				m = t;
1660			}
1661		} else if (parseInt(a[i], 10) <= 12 && m == -1) {
1662			m = a[i]-1;
1663		} else if (parseInt(a[i], 10) > 31 && y == 0) {
1664			y = parseInt(a[i], 10);
1665			(y < 100) && (y += (y > 29) ? 1900 : 2000);
1666		} else if (d == 0) {
1667			d = a[i];
1668		}
1669	}
1670	if (y == 0)
1671		y = today.getFullYear();
1672	if (m != -1 && d != 0)
1673		return new Date(y, m, d, hr, min, 0);
1674	return today;
1675};
1676
1677/** Returns the number of days in the current month */
1678Date.prototype.getMonthDays = function(month) {
1679	var year = this.getFullYear();

1680	if (typeof month == "undefined") {
1681		month = this.getMonth();
1682	}
1683	if (((0 == (year%4)) && ( (0 != (year%100)) || (0 == (year%400)))) && month == 1) {
1684		return 29;
1685	} else {
1686		return Date._MD[month];
1687	}
1688};
1689
1690/** Returns the number of day in the year. */
1691Date.prototype.getDayOfYear = function() {
1692	var now = new Date(this.getFullYear(), this.getMonth(), this.getDate(), 0, 0, 0);
1693	var then = new Date(this.getFullYear(), 0, 0, 0, 0, 0);
1694	var time = now - then;
1695	return Math.floor(time / Date.DAY);
1696};
1697
1698/** Returns the number of the week in year, as defined in ISO 8601. */
1699Date.prototype.getWeekNumber = function() {
1700	var d = new Date(this.getFullYear(), this.getMonth(), this.getDate(), 0, 0, 0);
1701	var DoW = d.getDay();
1702	d.setDate(d.getDate() - (DoW + 6) % 7 + 3); // Nearest Thu
1703	var ms = d.valueOf(); // GMT
1704	d.setMonth(0);
1705	d.setDate(4); // Thu in Week 1
1706	return Math.round((ms - d.valueOf()) / (7 * 864e5)) + 1;
1707};
1708
1709/** Checks date and time equality */
1710Date.prototype.equalsTo = function(date) {
1711	return ((this.getFullYear() == date.getFullYear()) &&
1712		(this.getMonth() == date.getMonth()) &&
1713		(this.getDate() == date.getDate()) &&
1714		(this.getHours() == date.getHours()) &&
1715		(this.getMinutes() == date.getMinutes()));
1716};
1717
1718/** Set only the year, month, date parts (keep existing time) */
1719Date.prototype.setDateOnly = function(date) {
1720	var tmp = new Date(date);
1721	this.setDate(1);
1722	this.setFullYear(tmp.getFullYear());
1723	this.setMonth(tmp.getMonth());
1724	this.setDate(tmp.getDate());
1725};
1726
1727/** Prints the date in a string according to the given format. */
1728Date.prototype.print = function (str) {
1729	var m = this.getMonth();
1730	var d = this.getDate();
1731	var y = this.getFullYear();
1732	var wn = this.getWeekNumber();
1733	var w = this.getDay();
1734	var s = {};
1735	var hr = this.getHours();
1736	var pm = (hr >= 12);
1737	var ir = (pm) ? (hr - 12) : hr;
1738	var dy = this.getDayOfYear();
1739	if (ir == 0)
1740		ir = 12;
1741	var min = this.getMinutes();
1742	var sec = this.getSeconds();
1743	s["%a"] = Calendar._SDN[w]; // abbreviated weekday name [FIXME: I18N]
1744	s["%A"] = Calendar._DN[w]; // full weekday name
1745	s["%b"] = Calendar._SMN[m]; // abbreviated month name [FIXME: I18N]
1746	s["%B"] = Calendar._MN[m]; // full month name
1747	// FIXME: %c : preferred date and time representation for the current locale
1748	s["%C"] = 1 + Math.floor(y / 100); // the century number
1749	s["%d"] = (d < 10) ? ("0" + d) : d; // the day of the month (range 01 to 31)
1750	s["%e"] = d; // the day of the month (range 1 to 31)
1751	// FIXME: %D : american date style: %m/%d/%y
1752	// FIXME: %E, %F, %G, %g, %h (man strftime)
1753	s["%H"] = (hr < 10) ? ("0" + hr) : hr; // hour, range 00 to 23 (24h format)
1754	s["%I"] = (ir < 10) ? ("0" + ir) : ir; // hour, range 01 to 12 (12h format)
1755	s["%j"] = (dy < 100) ? ((dy < 10) ? ("00" + dy) : ("0" + dy)) : dy; // day of the year (range 001 to 366)
1756	s["%k"] = hr;		// hour, range 0 to 23 (24h format)
1757	s["%l"] = ir;		// hour, range 1 to 12 (12h format)
1758	s["%m"] = (m < 9) ? ("0" + (1+m)) : (1+m); // month, range 01 to 12
1759	s["%M"] = (min < 10) ? ("0" + min) : min; // minute, range 00 to 59
1760	s["%n"] = "\n";		// a newline character
1761	s["%p"] = pm ? "PM" : "AM";
1762	s["%P"] = pm ? "pm" : "am";
1763	// FIXME: %r : the time in am/pm notation %I:%M:%S %p
1764	// FIXME: %R : the time in 24-hour notation %H:%M
1765	s["%s"] = Math.floor(this.getTime() / 1000);
1766	s["%S"] = (sec < 10) ? ("0" + sec) : sec; // seconds, range 00 to 59
1767	s["%t"] = "\t";		// a tab character
1768	// FIXME: %T : the time in 24-hour notation (%H:%M:%S)
1769	s["%U"] = s["%W"] = s["%V"] = (wn < 10) ? ("0" + wn) : wn;
1770	s["%u"] = w + 1;	// the day of the week (range 1 to 7, 1 = MON)
1771	s["%w"] = w;		// the day of the week (range 0 to 6, 0 = SUN)
1772	// FIXME: %x : preferred date representation for the current locale without the time
1773	// FIXME: %X : preferred time representation for the current locale without the date
1774	s["%y"] = ('' + y).substr(2, 2); // year without the century (range 00 to 99)
1775	s["%Y"] = y;		// year with the century
1776	s["%%"] = "%";		// a literal '%' character
1777
1778	var re = /%./g;
1779	if (!Calendar.is_ie5 && !Calendar.is_khtml)
1780		return str.replace(re, function (par) { return s[par] || par; });
1781
1782	var a = str.match(re);
1783	for (var i = 0; i < a.length; i++) {
1784		var tmp = s[a[i]];
1785		if (tmp) {
1786			re = new RegExp(a[i], 'g');
1787			str = str.replace(re, tmp);
1788		}
1789	}
1790
1791	return str;
1792};
1793
1794Date.prototype.__msh_oldSetFullYear = Date.prototype.setFullYear;
1795Date.prototype.setFullYear = function(y) {
1796	var d = new Date(this);
1797	d.__msh_oldSetFullYear(y);
1798	if (d.getMonth() != this.getMonth())
1799		this.setDate(28);
1800	this.__msh_oldSetFullYear(y);
1801};
1802
1803// END: DATE OBJECT PATCHES
1804
1805
1806// global object that remembers the calendar
1807window._dynarch_popupCalendar = null;

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