Календари, надеюсь никому не надо объяснять что это такое 
Код:
<!DOCTYPE html>
<html>
<head>
<title>Календарь на любое время (выд. числа,рус.неделя)</title>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1251">
<script type="text/javascript">
if (!fcp)
var fcp = new Object();
if (!fcp.msg)
fcp.msg = new Object();
if (!fcp)
var fcp = new Object();
if (!fcp.msg)
fcp.msg = new Object();
fcp.week_days = ["Пн", "Вт", "Ср", "Чт", "Пн", "Сб", "Вс"];
fcp.months = ["январь", "февраль", "март", "апрель", "май", "июнь",
"июль", "август", "сентябрь", "октябрь", "ноябрь", "декабрь"];
fcp.msg.prev_year = "предыдущий год";
fcp.msg.prev_month = "предыдущий месяц";
fcp.msg.next_month = "следующий месяц";
fcp.msg.next_year = "следующий год";
fcp.Calendar = function(element, show_clock) {
if (!element.childNodes)
throw "HTML element expected";
this.element = element;
this.selection = new Date();
this.show_clock = show_clock;
this.selected_cell = undefined;
this.generate_month();
this.render_calendar();
}
fcp.Calendar.prototype.set_date_time = function (date_time) {
if (date_time.constructor == Date) {
this.selection = date_time;
this.generate_month();
this.render_calendar();
} else {
throw "Date object expected (in fcp.Calendar.set_date_time)";
}
}
fcp.Calendar.prototype.next_month = function () {
var month = this.selection.getMonth();
if (month == 11) {
this.selection.setMonth(0);
this.selection.setYear(this.selection.getFullYear() + 1);
} else {
this.selection.setMonth(month + 1);
}
this.generate_month();
this.render_calendar();
}
fcp.Calendar.prototype.prev_month = function () {
var month = this.selection.getMonth();
if (month == 0) {
this.selection.setMonth(11);
this.selection.setYear(this.selection.getFullYear() - 1);
} else {
this.selection.setMonth(month - 1);
}
this.generate_month();
this.render_calendar();
}
fcp.Calendar.prototype.next_year = function () {
var is_feb29 = (this.selection.getMonth() == 1)
&& (this.selection.getDate() == 29);
if (is_feb29) {
this.selection.setDate(1);
this.selection.setMonth(2); // March
}
this.selection.setFullYear(this.selection.getFullYear() + 1);
this.generate_month();
this.render_calendar();
}
fcp.Calendar.prototype.prev_year = function () {
var is_feb29 = (this.selection.getMonth() == 1)
&& (this.selection.getDate() == 29);
if (is_feb29) {
this.selection.setDate(1);
this.selection.setMonth(2); // March
}
this.selection.setFullYear(this.selection.getFullYear() - 1);
this.generate_month();
this.render_calendar();
}
fcp.Calendar.prototype.generate_month = function () {
this.raw_data = new Array();
var week = 0;
this.raw_data[week] = new Array(7);
var first_of_month = fcp.Calendar.clone_date(this.selection);
first_of_month.setDate(1);
var first_weekday = first_of_month.getDay();
first_weekday = (first_weekday == 0) ? 6 : first_weekday - 1;
for (var i = 0; i < first_weekday; i++) {
this.raw_data[week][i] = 0;
}
var last_of_month = fcp.Calendar.days_in_month(
this.selection.getYear(),
this.selection.getMonth());
var weekday = first_weekday;
for (var i = 1; i <= last_of_month; i++) {
this.raw_data[week][weekday] = i;
weekday++;
if (weekday > 6) {
weekday = 0;
week++;
this.raw_data[week] = new Array(7);
}
}
for (var i = weekday; i < 7; i++) {
this.raw_data[week][i] = 0;
}
}
fcp.Calendar.prototype.render_calendar = function () {
this.element.selected_cell = undefined;
this.element.innerHTML = "";
this.element.appendChild(this.render_month());
}
fcp.Calendar.prototype.render_heading = function () {
var heading = document.createElement("caption");
var prev_year = document.createElement("a");
prev_year.href = "#";
prev_year.calendar = this;
prev_year.onclick = function() {
this.calendar.prev_year();
return false;
};
prev_year.innerHTML = "пред год |";
prev_year.title = fcp.msg.prev_year;
var prev_month = document.createElement("a");
prev_month.href = "#";
prev_month.calendar = this;
prev_month.onclick = function() {
this.calendar.prev_month();
return false;
};
prev_month.innerHTML = "пред мес|<br>";
prev_month.title = fcp.msg.prev_month;
var month_year = document.createTextNode(
"\u00a0" + fcp.months[this.selection.getMonth()]
+ " " + this.selection.getFullYear() + "\u00a0");
var next_month = document.createElement("a");
next_month.href = "#";
next_month.calendar = this;
next_month.onclick = function() {
this.calendar.next_month();
return false;
};
next_month.innerHTML = "<br>|сл мес";
next_month.title = fcp.msg.next_month;
var next_year = document.createElement("a");
next_year.href = "#";
next_year.calendar = this;
next_year.onclick = function() {
this.calendar.next_year();
return false;
};
next_year.innerHTML = "|сл год";
next_year.title = fcp.msg.next_year;
heading.appendChild(prev_year);
heading.appendChild(document.createTextNode("\u00a0"));
heading.appendChild(prev_month);
heading.appendChild(month_year);
heading.appendChild(next_month);
heading.appendChild(document.createTextNode("\u00a0"));
heading.appendChild(next_year);
return heading;
}
fcp.Calendar.prototype.render_month = function() {
var html_month = document.createElement("table");
html_month.className = "calendar";
html_month.appendChild(this.render_heading());
var thead = document.createElement("thead");
var tr = document.createElement("tr");
for (var i = 0; i < fcp.week_days.length; i++) {
var th = document.createElement("th");
th.innerHTML = fcp.week_days[i];
tr.appendChild(th);
}
thead.appendChild(tr);
html_month.appendChild(thead);
var tbody = document.createElement("tbody");
for (var i = 0; i < this.raw_data.length; i++) {
tbody.appendChild(this.render_week(this.raw_data[i]));
}
html_month.appendChild(tbody);
return html_month;
}
fcp.Calendar.prototype.render_week = function (day_numbers) {
var html_week = document.createElement("tr");
html_week.align = "right";
for (var i = 0; i < 7; i++) {
html_week.appendChild(this.render_day(day_numbers[i]));
}
return html_week;
}
fcp.Calendar.prototype.render_day = function (day_number) {
var td = document.createElement("td");
if (day_number >= 1 && day_number <= 31) {
var anchor = document.createElement("a");
anchor.href = "#";
anchor.innerHTML = day_number;
anchor.calendar = this;
anchor.date = day_number;
anchor.onclick = fcp.Calendar.handle_select;
td.appendChild(anchor);
if (day_number == this.selection.getDate()) {
this.selected_cell = td;
td.className = "in_month selected";
} else {
td.className = "in_month";
}
}
return td;
}
fcp.Calendar.prototype.onselect = function () {}
fcp.Calendar.clone_date = function (date_obj) {
if (date_obj.constructor != Date)
throw "Date object expected (in fcp.Calendar.clone_date)";
else
return new Date(
date_obj.getFullYear(),
date_obj.getMonth(),
date_obj.getDate(),
date_obj.getHours(),
date_obj.getMinutes(),
date_obj.getSeconds());
}
fcp.Calendar.days_in_month = function (year, month) {
if (month < 0 || month > 11)
throw "Month must be between 0 and 11";
var day_count = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
if (month != 1) {
return day_count[month];
} else if ((year % 4) != 0) {
return 28;
} else if ((year % 400) == 0) {
return 29;
} else if ((year % 100) == 0) {
return 28;
} else {
return 29;
}
}
fcp.Calendar.handle_select = function () {
if (this.calendar.selected_cell)
this.calendar.selected_cell.className = "in_month";
this.calendar.selected_cell = this.parentNode;
this.parentNode.className = "in_month selected";
this.calendar.selection.setDate(this.date);
this.calendar.onselect(this.calendar.selection);
return false;
}
function addLoadEvent(func) {
var oldonload = window.onload;
if (typeof window.onload != 'function') {
window.onload = func;
} else {
window.onload = function() {
if (oldonload) {
oldonload();
}
func();
}
}
}
addLoadEvent(function() {
cal = new fcp.Calendar(document.getElementById("cal_placeholder"));
cal.onselect = function(date) {alert(date);}; } )
//-->
</script>
<style>
table.calendar, table.calendar caption, table.calendar td.in_month { border: 1px solid black; background-color: #FFFFCC; text-align: center; FONT-WEIGHT: normal; FONT-SIZE: 8pt; FONT-FAMILY: Verdana, Arial, Helvetica, sans-serif}
table.calendar td.in_month { width:18px; FONT-WEIGHT: normal; FONT-SIZE: 8pt; FONT-FAMILY: Verdana, Arial, Helvetica, sans-serif}
table.calendar td.selected { background-color: yellow; FONT-WEIGHT: normal; FONT-SIZE: 8pt; FONT-FAMILY: Verdana, Arial, Helvetica, sans-serif}
table.calendar a { display: block; font-weight: bold; text-decoration: none; color: #0000ff; text-align: center; FONT-WEIGHT: normal; FONT-SIZE: 8pt; FONT-FAMILY: Verdana, Arial, Helvetica, sans-serif}
table.calendar caption a { display: inline; FONT-WEIGHT: normal; FONT-SIZE: 8pt; COLOR: red; FONT-FAMILY: Verdana, Arial, Helvetica, sans-serif}
</style>
<div id="cal_placeholder"></div>